Diagram B D c с Which car has: Ke = 100 PE=0? * 1 point A B C D​

Answer:Detergent mixes with water to remove dirt and oil from clothes. Water can't remove oil and dirt from clothes. Detergent cleans by causing a chemical reaction with water to force dirt and debris out of clothing. Detergents work with water to loosen the dirt trapped in the material of clothing and clean them away.

Explanation:May i plz have brainlist only if u wanna give me brainlist though have an nice day!

Answer: Distance traveled in time t is s

Explanation: Self Explanatory

The numbers of people that lost their jobs when the minimum wage increased from $12 to $18 is option A. 15

Determining the effect that an increase in minimum wage will have on employment is a multifaceted matter influenced by several factors including the state of the economy, the industry in question, as well as the dynamics of the labor market.

Raising the minimum wage has the potential to result in a variety of consequences.

From the graph, you can see that:

18 people worked at $12

33 people worked at  18

Hence: 33- 18

= 15

Therefore, option is correct.

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Answer:

Explanation:

Kinetic energy is at an absolute max when the potential energy is 0. At the ball's highest point, at its most absolute highest point, the velocity of the ball is 0, making KE = 0 and PE the only energy the ball has. So if this isn't a trick question, the wording is off.

Answer:

Just don't do it.

Explanation:

The magnitude and direction of the resultant force (F=10N+5N+4N+6N) when four forces of magnitude 10N, 5N, 4N, and 6N operate on an object in the directions of north, west, east, and south, respectively, is 25N.

In terms of physics, magnitude is just "distance or quantity." It displays an object's size, direction, or motion in absolute or relative terms. It is employed to indicate the size or scope of something. The word "magnitude" in physics frequently denotes a size or quantity.. Something's magnitude is determined by its size. For example, a car moves faster than a bike with terms of speed. The speed difference between the car and the bike in this case is greater. It reveals the absolute or relative size or direction that an object moves when in motion.

Speed is defined as the magnitude of velocity, and the magnitude of the slope of the displacement-time graph provides the speed. Since the slope gets steeper as we move from A to B, Speed is increased as a result between points A and B.

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The terminal velocity of the squirrel is approximately 29.5 m/s.

The terminal velocity of an object can be calculated using the equation:

\(V_t = \sqrt{(2mg / (C_d \times A \times p))\)

where V_t is the terminal velocity,

m is the mass of the object (550 g = 0.550 kg),

g is the acceleration due to gravity (\(9.8 m/s^2\)),

\(C_d\) is the drag coefficient for a horizontal skydiver (approximately 0.75),

A is the surface area of the object, and p is the density of air (approximately 1.225 kg/m^3 at sea level).

Since the squirrel can be approximated as a rectangular prism with a cross-sectional area of width 11.1 cm and length 22.2 cm,

We can calculate A as follows:

A = \(2 \times (11.1 cm) \times (22.2 cm)\)

= \(484 cm^2\)

Converting the surface area to square meters:

A = \(484 cm^2 \times (10^-4 m^2/cm^2)\)

= \(0.0484 m^2\)

Finally, calculate the terminal velocity:

\(V_t = \sqrt((2 \times 0.550 kg \times 9.8 m/s^2) / (0.75 \times 0.0484 m^2 \times 1.225 kg/m^3))\)

= 29.5 m/s

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Answer:

58.56 J

Explanation:

Since the formula for gravitational potential energy is:

GE = m x g x h - where m = mass (kg), g = acceleration due to gravity (9.81 m/s²), h = height (m)

GE= 3 x 9.81 x 2

GE = 58.86 J

Hope this helps

The progress toward my three physical fitness goal can be seen below:

This is referred to as a form of physical activity which makes an individual fit and also improves the general well being of the person involved and examples include running, jogging, weight lifting etc.

The physical fitness goal which was set was to ensure that I become healthy from being obese by shedding fat in the body and the results have been a slimmer arm and body.

There was also the need to improve endurance and it has been improved such that the revs which are done during exercises have been increased thereby leading to an increase in the intensity of the activities being done ti achieve the required result.

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B. The equivalent resistance of the two resistors is 20.0 ohms.

C. The voltmeter will measure the voltage across the 30.0 ohm resistor.

D. The 30.0 ohm resistor will stop working.

B. The total resistance of the circuit is 60.0 ohms. This is because the 30.0 ohm resistor and the 60.0 ohm resistor are in parallel, and the equivalent resistance of two resistors in parallel is equal to the product of the resistors divided by the sum of the resistors.

R_T = 1/(1/R_1 + 1/R_2 + ...)

In this case, the product of the resistors is:

30.0 ohms × 60.0 ohms = 1800 ohms,

and the sum of the resistors is:

30.0 ohms + 60.0 ohms = 90.0 ohms.

Therefore, the equivalent resistance of the two resistors is 1800 ohms / 90.0 ohms = 20.0 ohms.

C. Meter 1 is an ammeter, and it is connected in series with the 30.0 ohm resistor. This means that the ammeter will measure the current flowing through the 30.0 ohm resistor.

Meter 2 is a voltmeter, and it is connected in parallel with the 30.0 ohm resistor. This means that the voltmeter will measure the voltage across the 30.0 ohm resistor.

D. When the switch is opened, the 30.0 ohm resistor will stop working. This is because the switch is in series with the 30.0 ohm resistor, and when the switch is opened, the circuit is broken.

The 60.0 ohm resistor will continue to work, because it is in parallel with the switch, and the current will continue to flow through the 60.0 ohm resistor even when the switch is opened.

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Answer:

its c

Explanation:

Answer:

The work done will be "763 J". A further explanation is given below.

Explanation:

The given values are:

\(Q_1=1000 \ J\)

Temperature,

\(T_1=900^{\circ} C\)

i.e,

    \(=1173\)

\(T_2=5^{\circ}C\)

i.e.,

    \(=278\)

As we know,

⇒  \(\eta =1-\frac{T_2}{T_1}\)

On substituting the values, we get

⇒     \(=1-\frac{278}{1173}\)

⇒     \(=\frac{1173-278}{1173}\)

⇒     \(=\frac{895}{1173}\)

⇒     \(=0.763\)

then,

⇒  \(W=\eta Q_1\)

⇒       \(=0.763\times 1000\)

⇒       \(=763 \ J\)

1.00 kg of ice at -24.0°C is placed in contact with a 1.00 kg block of a metal at 5.00°C. They come to equilibrium at -8.88°C.

We can use the principle of conservation of heat to solve this problem. The heat lost by the metal must equal the heat gained by the ice.

The heat lost by the metal is given by

Q1 = m1c1ΔT1

Where m1 is the mass of the metal, c1 is its specific heat, and ΔT1 is the change in temperature.

The heat gained by the ice is given by

Q2 = m2c2ΔT2

Where m2 is the mass of the ice, c2 is its specific heat, and ΔT2 is the change in temperature.

Since the two objects come to thermal equilibrium, we can set Q1 equal to Q2

m1c1ΔT1 = m2c2ΔT2

Solving for c1, we get

c1 = m2c2ΔT2 / (m1ΔT1)

By putting these values we get

c1 = (1.00 kg)(2.06 kJ/kg·K)(-24.0°C - (-8.88°C)) / [(1.00 kg)(5.00°C - (-8.88°C))]

c1 = 0.902 kJ/kg·K

Hence, the specific heat of the metal is 0.902 kJ/kg·K.

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Answer:

un café y a seguir pensando porque no se la respuesta xd

So, the final velocity of the ball when it is 2.101 above the ground is 13.99 m/s or can be rounded to 14 m/s.

Hi ! In this question, I will help you. This question will addopt the principle of final velocity in free fall. Free fall is vertical downward movement that occurs when any object dropped without initial velocity. In othee word, the object that falls is only affected by the presence of gravity and its initial high. In general, the final velocity in free fall can be expressed by this equation :

\( \boxed{\sf{\bold{v = \sqrt{2 \times g \times h}}}} \)

With the following condition :

We know that :

Note :

At this point (2.101 m above the ground), the object can still complete its movement up to exactly 0 m above the ground.

What was asked :

Step by Step

\( \sf{v = \sqrt{2 \times g \times \Delta h}} \)

\( \sf{v = \sqrt{2 \times g \times (h_1 - h_2)}} \)

\( \sf{v = \sqrt{2 \times 9.8 \times (12.09 - 2.101)}} \)

\( \sf{v = \sqrt{19.6 \times 9,989}} \)

\( \sf{v \approx \sqrt{195.78}} \)

\( \boxed{\sf{v = 13.99 \: m/s \approx 14 \: m/s}} \)

So, the final velocity of the ball when it is 2.101 above the ground is 13.99 m/s or can be rounded to 14 m/s.

Answer:

Explanation:

the answer is b

Answer:

In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.

The car will move at a constant speed once it is unleashed, as is assumed. Hence, there is no acceleration. Newton's second law states that a straight line along zero will appear on the graph if F=ma=m(0)=0, F=0.

Acceleration is the rate at which an object changes its velocity. It is a vector quantity, which means it has both magnitude and direction. The standard unit of acceleration is meters per second squared (m/s²).

Acceleration can be caused by forces such as gravity, friction, and electromagnetism. When a force acts on an object, it causes a change in the object's motion, resulting in acceleration.

The relationship between acceleration, velocity, and time is described by the equation a = (v_f - v_i) / t, where a is acceleration, v_f is final velocity, v_i is initial velocity, and t is time.

The effects of acceleration can be seen in everyday experiences, such as feeling pushed back into your seat when a car accelerates or feeling weightless during freefall. Understanding acceleration is important in fields such as physics, engineering, and transportation.

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Answer:

part. 1: b. -7.35 N

part 2: -12.73 N

Explanation:

The free-body diagram of the object is given below:

The green arrows above tell us the direction of the positive x - and y-axis in our twisted coordinated system.

Now, what is the magnitude of the weight parrallel to the incline (the blue line). It turns out that the answer is

Now in our case, m = 1.5 kg and g = 9.8 m/s^2; therefore. the above gives

which evaluates to give

This tells us that the weight of the box parallel to the incline is -7.35 N.

Now, what is the magnitude of the red arrow (the perpendicular component of weight) ? From trigonometry, we have

SInce in our case m = 1.5 and g = 9.8 m/s^2, we have

which evaluates to give

Hence, the perpendicular component of weight is -12.73 N.

Therefore, to summerise:

part. 1: b. -7.35 N

part 2: -12.73 N

The spring stiffness is quantified by the spring constant, or k. For various springs and materials, it varies.

The stiffer the spring is and the harder it is to stretch, the larger the spring constant.

Springs are pliable mechanical devices that regain their previous shape after deforming, i.e. after being stretched or compressed. They are an essential part of many different mechanical devices.

The well-known metal coil has evolved into an essential element in the modern world, appearing in everything from engines to appliances to tools to automobiles to medical equipment and even basic ball-point pens. The spring's ability to store mechanical energy accounts for its widespread use and applications.

Therefore, The spring stiffness is quantified by the spring constant, or k. For various springs and materials, it varies.

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OA: A. A claim, assumption, or method that is commonly thought to be based on science but is not scientific.

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.

A claim, assumption, or method that is commonly thought to be based on science but is not scientific is called pseudoscience. Pseudoscience is often presented as being scientific, but it does not meet the criteria of science. For example, pseudoscience may be based on speculation or personal opinion, rather than on evidence. It may also be based on experiments that are not properly controlled or that are not reproducible.

Pseudoscience can be harmful because it can lead people to make decisions that are not based on evidence. For example, people who believe in pseudoscience may be more likely to avoid proven medical treatments or to use unproven treatments that could actually be harmful.

It is important to be able to identify pseudoscience so that you can make informed decisions about your health and your life. If you are unsure whether something is pseudoscience, you can ask a scientist or do some research to find out more.

Using the formula F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them, we can calculate the gravitational force between Jupiter and the sun.

Plugging in the values, we get:

F = (6.674 x 10^-11 N * (m^2 / kg^2)) * ((1.9 x 10^27 kg) * (2 x 10^30 kg)) / (78 x 10^6 m)^2

Simplifying this, we get:

F = 1.98 x 10^27 N

Therefore, the gravitational force between Jupiter and the sun is approximately 1.98 x 10^27 Newtons.

The gravitational force between Jupiter and the sun, calculated using Newton's law of gravitation with their masses and distance, is \(1.95 * 10^{22} N.\)

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Answer:

mass and distance

Explanation:

mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

depending on the object the force pressing in on the object are equal with the quantity of the object.

Answer:

·ω·

Explanation:

The linear distance and the tangential velocity of the end of the stick are 1.63 m and 10.9 m/s respectively.

Rotational motion is the motion of a body around a circular path, in a fixed orbit. The dynamics for rotational motion are entirely analogous to linear or translational dynamics. The equations for rotating objects are similar to the motion equations for linear motion.

Given, the length of the hockey stick, r = 1.1 m

The hockey stick completes one swing in time, t = 0.15 sec

The angle θ = 85° = 1.483 rad

The average angular velocity of the hockey stick,

ω = θ/t = 1.483rad/0.15s = 9.9 rad/s

The linear distance moved by the end of the hockey stick:

L = rθ = 1.1× 1.483 = 1.63 m

The tangential velocity of the end of the hockey stick:

v = rω = 1.1 × 9.9 = 10.9 m/s

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Complete and Clear Question:

A person puts a few apples into the freezer at -15°C to cool them quickly for guests who are about to arrive. Initially, the apples are at a uniform temperature of 20°C, and the heat transfer coefficient on the surfaces is 8 W/m2·K. Treating the apples as 9-cm-diameter spheres and taking their properties to be \(\rho =\) 840 kg/m3,  \(c_{p} =\) 3.81 kJ/kg·K, k = 0.418 W/m·K, and \(\alpha = 1.3 * 10^{-7} m^{2} /s\), determine the center and surface temperatures of the apples in 1 h. Also, determine the amount of heat transfer from each apple. Solve this problem using analytical one-term approximation method (not the Heisler charts).

Answer:

Temperature at the center of the apple, T(t) = 11.215°C

Temperature at the surface of the apple, T(r,t) = 2.68°C

Amount of heat transfer from each apple, Q = 21.47 kJ

Explanation:

For clarity and easiness of expression, the calculations are handwritten and attached as a file. Check the attached files for the complete calculation.

The time taken for the bit to reach the maximum speed is 1.35 seconds.

The angular acceleration of the bit is determined by applying the following kinematic equation as shown below.

ωf² = ωi² + 2αθ

where;

α = (ωf² - ωi²)/2θ

α = (46,100² - 17,600²) / (2 x 19,700)

α = 46,077.4 rad/s²

The time taken for the bit to reach the maximum speed is calculated as follows;

ωf = ωi + αt

t = (ωf - ωi) / α

t = (79,900 - 17,600) / (46,077.4)

t = 1.35 seconds

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Answer:

The magnitude of displacement vector 2D-E is approximately 14.49 units. The calculation is done using the Pythagorean theorem after finding 2D-E by multiplying vector D by 2 and subtracting vector E.

Explanation:

The value of 2D-E must first be calculated in order to ascertain the displacement 2D-E's magnitude. Vector D may be multiplied by two to accomplish this, and the result can be obtained by deducting vector E:

2D-E = 2(6i + 3j - k) 4i + 5j + 3k = 8i + 11j - 5k - (4i - 5j + 3k) = 12i + 6j - 2k

We can use the Pythagorean theorem to determine the magnitude of the displacement vector now that we know it:

|2D-E| = √(8² + 11² + (-5)²) = √(64 + 121 + 25) = √210 ≈ 14.49

The displacement 2D-E magnitude is therefore 14.49 units or such. From the object's beginning location to its ultimate position, the displacement's entire length is shown by this. Being a scalar variable, the displacement's magnitude does not reveal the displacement's direction.

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