Which statement about spending the day of January 15th in the cities of
Chicago and Sydney is true?
A Both cities will be experiencing winter.
B Both cities will be experiencing summer.
C Chicago will be experiencing winter, while Sydney is experiencing summer.
D Chicago will be experiencing summer, while Sydney is experiencing winter.

Answer:

The mass of each object is 2kg and 3 kg.

Explanation:

Given that,

Gravitational force,\(F=1\times 10^{-8}\ N\)

The distance between masses, d = 20 cm = 0.2 m

The total mass of the two objects, M + m = 5 kg

M = 5-m

The formula for the gravitational force is :

\(F=G\dfrac{Mm}{d^2}\\\\1\times 10^{-8}=6.67\times 10^{-11}\times \dfrac{(5-m)m}{(0.2)^2}\\\\\frac{1\times10^{-8}}{6.67\times10^{-11}}=\frac{(5-x)x}{(0.2)^{2}}\\\\\frac{1\times10^{-8}}{6.67\times10^{-11}}\cdot(0.2)^{2}\\\\5.99=(5-x)x\\\\x=2\ kg\ and\ 3 \ kg\)

So, the mass of each object is 2kg and 3 kg.

8.27 x 1013 meres is the orbital radius.

Jupiter's mass, 1.9 x 1027 kg, and the time interval, 16.9 days, are equal to 1.46 x 106 seconds. The radius is needed, thus r. Solution

The moon must be held in its orbit by a gravitational force equal to the centripetal force between Jupiter and the moon.

6.67 x 10⁻¹¹ N/m²kg

2 x 1.9 x 10/27 x 1.46 x 10'6 / 4 r = 6.85 x 102'7 G = 6.67 x 10'11 N/m2kg2 r = 8.27 x 10'7

The second-largest moon in Jupiter's orbit and the third-largest moon in the solar system is called Callisto. Of all the objects in our solar system, its surface has the most craters.

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Answer:

The angular acceleration of CD player is \(13.93\ rad/s^2\).

Explanation:

Initial angular speed of a CD player is 0 and final angular speed is 41.8 rad/s. Time to change the angular speed is 3 s.

It is required to find the angular acceleration. The change in angular speed of the CD player divided by time taken is called its angular acceleration. It can be given by :

\(a=\dfrac{\omega_f-\omega_i}{t}\\\\a=\dfrac{41.8-0}{3}\\\\a=13.94\ rad/s^2\)

So, the angular acceleration of CD player is \(13.93\ rad/s^2\).

The distance of the canoeist from the dock is equal to length of the canoe, L.

The principle of conservation of linear momentum states that the total momentum of an isolated system is always conserved.

v(m₁ + m₂) = m₁v₁ + m₂v₂

where;

v is the velocity of the canoeist and the canoe when they are together

The distance traveled by the canoeist from the back of the canoe to the front of the canoe is equal to the length of the canoe.

Thus, the distance of the canoeist from the dock is equal to length of the canoe, L.

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Answer:

The horizontal range of the cannonball is 9180.4 meters.

Explanation:

The horizontal range of a cannonball can be calculated using the following formula:

range = (speed * speed * sin (2 * angle)) / acceleration due to gravity

In this case, we are given that the cannon is fired at an angle of 45 degrees and that the speed of the ball is 300 m/s. We can plug these values into the formula to calculate the horizontal range of the ball:

range = (300 * 300 * sin (2 * 45)) / 9.8

= (90000 * sin (90)) / 9.8

= (90000 * 1) / 9.8

= 9180.4 m

\(A. \: \: \: \: F = kqq/r^ 2 \\B. \: \: \: \: F = kqq/r \\C. \: \: \: \: F = qq/kr^ 2 \\D. \: \: \: \: F = kr^2 /qq \\ \)

F is directly proportional to the product of the charges

\(F∝qq\)

F is inversely proportional to the square of the distance between them

\(F∝ \frac{1}{ {r}^{2} } \)

from above 2 equation:-

we get:-

\(F∝ \frac{qq}{ {r}^{2} } \)

To remove proportionality sign we use constant for this case we r using constant k

\(F = \frac{Kqq}{ {r}^{2} } \)

So your answer is :-

OPTION A.

\(F = \frac{Kqq}{ {r}^{2} } \)

Answer:

The carbon dioxide levels have increased due to burning fossil fuels

Explanation:

Correct on edge 2021 hope this helps!✌️

The gas in Earth's atmosphere that has increased over time due to burning fossil fuels is carbon dioxide.

Global warming is defined as the phenomenon of heating up of the earth's surface in a long term due to the increased amount of emission of green house gases in the earth's atmosphere.

Here,

When more fossil fuels and the materials like coal are burned for the purpose of energy production, it will result to the production of an increased amount of carbon dioxide. This leads to the emission of huge amount of carbon dioxide in the earth's atmosphere. Since, carbon dioxide is a green house gas, the release of higher amount of carbon dioxide will lead to an increased concentration of green house gases. This causes an increase in the temperature of the atmosphere, resulting in the increased heating of the surface of earth. This uneven heating up of  earth's surface is called global warming. This is the result of higher release of carbon dioxide in the earth's atmosphere.

Hence,

The gas in Earth's atmosphere that has increased over time due to burning fossil fuels is carbon dioxide.

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Answer:

B.-80.35 J

i dont know the calculation

Given,

Mass of each sphere = m = 3.33g = 3.33 x 10^-3 kg

Distance between sphere = d = 4.665 cm = 4.665 x 10^2 cm

Acceleration = a = 268.36 m/s^2.

Force on the sphere is given by the below formula,

Result:- So the charge on the each sphere is 46.484 x 10^-8 C.

Answer:

  c.  5.6 W

Explanation:

We can write the Kirchoff's voltage law (KVL) equations for the circuit using i1 for the clockwise current in the left loop, and i2 for the clockwise current in the right loop. Then the circuit equations are ...

  i1 (10 +10) -i2(10) = 12

  -i1(10) +i2(10 +15) = 8

Using Cramer's rule to find i2, we have ...

  i2 = (12(-10) -8(20))/((-10)(-10) -(25)(20)) = -280/-400 = 0.7

The power supplied by the Emf is ...

  (8 V)(0.7 A) = 5.6 W . . . . . matches choice C

Answer:

3.07 m/s

Explanation:

Given:

The acceleration of its center of mass will be:

= \(\frac{2}{3}g Sin \Theta\)

By putting the above given values, we get

= \(\frac{2}{3}\times 9.8 Sin 28^{\circ}\)

= \(\frac{2}{3}\times 9.8\times 0.46\)

= \(\frac{9.0167}{3}\)

= \(3.07 \ m/s^2\)

Thus the solution above is appropriate.

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Explanation:i think its nuetrons

The Kinetic energy of the cell phone of mass 0.08 kg is 9 J.

Kinetic energy is the energy of a body in motion.

To calculate the kinetic energy of the cell phone, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the Kinetic energy of the cell phone is 9 J.

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Given,

The weight of the door, W=70.0 N

The height of the door, h=2.60 m

The width of the door, l=1.20 m

The torque is the product of the force and the distance between the axis and the point where the force is being applied.

The center of mass of the rectangle will be at its geometric center.

The distance between the horizontal axis passing through the corner of the door and the center of mass of the door is,

On substituting the known values,

Thus the required torque is given by,

On substituting the known values,

Thus the torque due to the door's own weight about a horizontal axis perpendicular to the door and passing through a corner is 100.1 Nm

Answer:

the theorist that I chose is John Watson. He focused on the behaviors of a person on the outside. “He believed that a person’s physical responses provided the only insight into internal actions.”[ CITATION Goo15 \l 1033 ] He believed that behaviors are learned, as with the rat white and “Albert”. He taught “Albert” to fear the rat by making a sound any time the rat was shown. “Through learning, an initially neutral stimulus, the white rat, had become a stimulus for fear.”[CITATION Car17 \p 41 \l 1033

Explanation:

this is the answer

The biologist who had summarized the theory to explain the aspects of the theory is john watson.

Who was john watson?

John B. Watson was a trailblazing psychologist who made significant contributions to the growth of behaviorism. Watson thought that the main focus of psychology should be on observable behavior in science. He is famous for his studies on the process of conditioning.

Watson is particularly well-known for the Little Albert experiment, in which he showed how a young kid may be taught to fear a stimulus that was previously neutral. Additionally, his studies shown that this phobia might extend to other similar things.

Therefore, The biologist who had summarized the theory to explain the aspects of the theory is john watson.

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Answer:

ke=648J

Explanation:

ke=1/2mv²

m=9kg

v=12m/s

1/2(9)(12)²

=648J

The temperature gradient in the flow of direction is 294525 W.

A temperature gradient is the gradual variance in temperature with distance. The slope of the gradient is consistent within a material. A gradient is established anytime two materials at different temperatures are in physical contact with each other.

Q= T/( L/ KA)

Q= ( 1500 − 450) / 0.15 / 9.35v * 4.35)

   = 294525 W

Units of measure of temperature gradients are degrees per unit distance, such as °F per inch or °C per meter.

Many temperature gradients exist naturally, while others are created. The largest temperature gradient on Earth is the Earth itself. Q= T/Ka.

Therefore, The temperature gradient in the flow of direction is 294525 W.

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The x-coordinate of the shell where it explodes, relative to its firing point, is approximately 7688.1 meters, and the y-coordinate is approximately 9507.8 meters.

If an automobile is at rest, its beginning velocity is 0.The starting velocity of an automobile that stops after using the brakes will be greater than zero, but the ultimate velocity will be zero.

The kinematic equations of motion can be used to resolve this issue.We can break down the initial velocity into its x- and y-components:

Vx = V0 cosθ = (300 m/s) cos(55.5°) ≈ 163.3 m/s

Vy = V0 sinθ = (300 m/s) sin(55.5°) ≈ 247.2 m/s

Next, we can use the equations of motion to find the shell's position after 47.0 seconds. The x-coordinate is given by:

x = Vx t = (163.3 m/s)(47.0 s) ≈ 7688.1 m

The y-coordinate is given by:

y = Vy t + (1/2)gt²= (247.2 m/s)(47.0 s) + (1/2)(9.81 m/s²)(47.0 s) ≈ 9507.8 m

where g is the acceleration due to gravity.

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ANSWER AND EXPLAINATION:
To calculate the impulse imparted on the baseball, we can use the impulse-momentum principle, which states that the impulse experienced by an object is equal to the change in momentum of the object. Mathematically, it can be expressed as:

Impulse = Change in momentum

The momentum of an object is given by the product of its mass and velocity:

Momentum = mass × velocity

In this case, the baseball has an initial mass of 0.14 kg and an initial velocity of 32 m/s. After being struck by the bat, it travels in the opposite direction at a velocity of 49 m/s.

Therefore, the change in momentum is given by:

Change in momentum = (mass × final velocity) - (mass × initial velocity)

Change in momentum = mass × (final velocity - initial velocity)

Change in momentum = 0.14 kg × (49 m/s - (-32 m/s))

Change in momentum = 0.14 kg × (49 m/s + 32 m/s)

Change in momentum = 0.14 kg × 81 m/s

Change in momentum = 11.34 kg·m/s

So, the impulse imparted on the baseball is 11.34 kg·m/s.

The total charge in the circuit is 240 microcoulombs.

To calculate the total charge in a series circuit with capacitors, we need to use the formula Q = CV, where Q represents the charge, C is the capacitance, and V is the voltage.

In this case, we have three capacitors connected in series with capacitances of 4 μF, 3 μF, and 2 μF, respectively. The voltage across the circuit is 260 V.

To find the total capacitance (C_total) in a series circuit, we use the reciprocal rule: 1/C_total = 1/C1 + 1/C2 + 1/C3. Plugging in the values, we get 1/C_total = 1/4 + 1/3 + 1/2.

Simplifying this equation gives us 1/C_total = (3 + 4 + 6)/12 = 13/12. Taking the reciprocal, we find C_total = 12/13 μF.

Now, we can calculate the total charge (Q_total) using Q = C_total × V. Substituting the values, we get Q_total = (12/13) μF × 260 V.

Calculating the numerical value, Q_total = (12/13) × 260 = 240 μC (microcoulombs).
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Answer:

The final speed of the second package is twice as much as the final speed of the first package.

Explanation:

Free Fall Motion

If an object is dropped in the air, it starts a vertical movement with an acceleration equal to g=9.8 m/s^2. The speed of the object after a time t is:

\(v=gt\)

And the distance traveled downwards is:

\(\displaystyle y=\frac{gt^2}{2}\)

If we know the height at which the object was dropped, we can calculate the time it takes to reach the ground by solving the last equation for t:

\(\displaystyle t=\sqrt{\frac{2y}{g}}\)

Replacing into the first equation:

\(\displaystyle v=g\sqrt{\frac{2y}{g}}\)

Rationalizing:

\(\displaystyle v=\sqrt{2gy}\)

Let's call v1 the final speed of the package dropped from a height H. Thus:

\(\displaystyle v_1=\sqrt{2gH}\)

Let v2 be the final speed of the package dropped from a height 4H. Thus:

\(\displaystyle v_2=\sqrt{2g(4H)}\)

Taking out the square root of 4:

\(\displaystyle v_2=2\sqrt{2gH}\)

Dividing v2/v1 we can compare the final speeds:

\(\displaystyle v_2/v_1=\frac{2\sqrt{2gH}}{\sqrt{2gH}}\)

Simplifying:

\(\displaystyle v_2/v_1=2\)

The final speed of the second package is twice as much as the final speed of the first package.

Answer:

Explanation:

alot

Answer:

hich graph represents this system?

y = 2 x + 1. y = negative 4 x + 7.

On a coordinate plane, a line goes through (0, 7) and (1, 3) and another goes through (1, 3) and (2, 5).

On a coordinate plane, a line goes through (negative 4, 0) and (0, 7) and another line goes through (negative 4, 3) and (0, 1).

On a coordinate plane, a line goes through (0, negative 4) and (1, 3) and another goes through (0, 2) and (1, 3).

On a coordinate plane, a line goes through (0, 7) and (8, 5) and another line goes through (0, 1) and (8, 5).

Explanation:

asdfgh

Answer:

the thigh bone is a femur

the femur is a long bone so therefore the type of bone is a long bone !

Explanation:

Press Alt and 0176 on your keyboard. Please take note that this technique only functions on keyboard shortcut with a 10-key numeric pad.

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Answer: 317.52

Explanation:

I'm just better

Answer:

5m

This is the number

Answer:

True!

Explanation:

The formula for calculating attraction is F=GMmr².

Gravitational attraction is the force of attraction that occurs on all bodies

which have a mass as a result of the force of gravitational force.

The Force is directly proportional to the product of their masses  and

inversely proportional to the square of the distance between them.

Gravitational attraction =  F=GMmr².

where F is the Force, G is gravitational constant, M and m are masses and r²

is square of the distance between the masses.

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