A mass of 8kg is pulled by a force of 20N along a smooth floor. Calculate the
a).acceleration
b).velocity after 4s
c).distance moved in 4s
d).workdone by the force

The proton of mass 1.67×10⁻²⁷ kg is converted into energy, it yields a total energy of 932MeV.

By using the Einstein mass-energy equivalence, energy is directly proportional to the mass. Energy is obtained from the product of the mass and velocity of the light. The unit of energy in terms of (electron volt) eV.

From the given,

the proton of mass(m) = 1.67×10⁻²⁷ kg

the velocity of light (c)= 3×10⁸ m/s.

mass-energy equivalence

 E = mc²

    = 1.67×10⁻²⁷×3×10⁸×3×10⁸

   = 15.03×10⁻¹¹/1.6×10⁻¹⁹

   = 939MeV.

Thus, the energy yielded by the proton when its mass is converted into energy is 939MeV.

To learn more about Mass-energy equivalence:

https://brainly.com/question/2651839

#SPJ1

Answer:

tôi đoán lagf  pjhAWN ỨNG HÓA HỌC

Explanation:

Answer:

4/3 kg

Explanation:

KE = (1/2)mv^2

6=0.5*m*(3)^2

m=4/3

The shock absorbers must dissipate 384 J (joules) of energy to damp the bounce.

To answer your question, we will first need to calculate the initial kinetic energy of the bounce and then determine the energy that must be dissipated by the shock absorbers.

Step 1: Calculate the initial kinetic energy (KE) of the bounce.
The formula for kinetic energy is:
KE =\((1/2) * m * v^2\)

where m is the mass of the car (1200 kg) and v is the initial velocity (0.800 m/s).

\(KE = (1/2) * 1200 kg * (0.800 m/s)^2\\KE = 0.5 * 1200 kg * 0.64 m^2/s^2\)
KE = 384 J (joules)

Step 2: Determine the energy that must be dissipated by the shock absorbers.
Since the car is at the equilibrium position and the shock absorbers need to dissipate the initial kinetic energy of the bounce, the energy to be dissipated is equal to the initial kinetic energy calculated in Step 1.

Therefore, the shock absorbers must dissipate 384 J (joules) of energy to damp the bounce.

Learn more about shock absorbers here:

https://brainly.com/question/29568473

#SPJ11

Answer:

Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.

Explanation:

Answer:

Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.

Explanation:

The correct answer is centrifuge.

Your complete blood is drawn out during an apheresis procedure, which is used to donate platelets. Your blood is spun in a centrifuge to separate your plasma, platelets, and red blood cells. As the blood is divided, the heavier reds cells drop to the bottom and are given back to you.

Between the liquid plasma and the platelets that are tracked into a small pouch that is wrapped around the centrifuge cylinder as the liquid plasma rises. When you donate blood, your spleen releases stockpiled platelets into your bloodstream in an effort to stop the bleeding.

As a result, more platelets and plasma are collected, enabling you to donate one, two, or even three doses of platelets in a single visit. Your healthy bone marrow quickly starts producing additional platelets from stem cells to replace those that have been given while this is happening.

Since only one donor is used for the donation, platelet donors are able to provide patients with a greater amount and higher-quality platelets to aid in their fight for survival.

To learn more about platelet refer the link:

https://brainly.com/question/10920210

#SPJ9

Since the magnetic force and velocity are orthogonal, the velocity only changes in direction but not in magnitude . Circular motion is the end consequence. The force is in the opposite direction from the right-hand rule and has a negative charge.

Uniform In circular motion, an object moves in two dimensions with a constant speed in a fixed circular direction; however, because the object's direction changes at every point, the velocity also changes, and the direction at each point is always the tangent.

In physics, magnetic force is referred to as an object's maximal size and direction. Both vector and scalar values use magnetic force as a common factor. We understand that by definition

Learn more about magnetic force here

https://brainly.com/question/10353944

#SPJ4

Answer: The velocity simply changes in direction, not magnitude, as the magnetic force and velocity are orthogonal.

Explanation: The velocity simply changes in direction, not magnitude, as the magnetic force and velocity are orthogonal. The resultant motion is circular. The force has a negative charge and is directed in the opposite direction from the right-hand rule.

Uniform In a circular motion, an item moves in two dimensions with a constant speed in a fixed circular direction; yet, because the object's direction varies at each point, the velocity also alters, and the direction at each point is consistently the tangent.

As an object's maximum size and direction, the magnetic force is referred to in physics. Magnetic force is a factor that is present in both scalar and vector values. We comprehend that by nature.

To know more about "Magnetic Field" please click here

https://brainly.com/question/23064308

#SPJ4

Answer:

It often happens in a circuit which was conducting,and a switch is opened. Any inductance in the circuit will help the voltage increase due to back emf,and this can cause breakdown of the air insulation and an arc can form.

Explanation:

Answer:

Below

Explanation:

If they are all in parallel, the quivalent resistance is given by

            1                     =    3.6 Ω

  1/R1   + 1/R2  + 1/R3

Answer:

C. Line A

Explanation:

V = A*R

12V = 4A*R

R = 12V/4A

R = 3ohms

Answer:

1. A hiking

2. C

3. B

4. D

5. E

(a) For graph A the object is moving at a zero constant speed.

(b) For graph B the object is moving at a constant speed greater than zero.

(c) For graph C the object is moving a uniform speed.

Constant velocity refers to a situation in which an object moves at a constant speed in a straight line. This means that the magnitude of the velocity (i.e. the speed) of the object remains the same over time, while its direction may or may not change.

Uniform velocity refers to a situation in which an object moves with a constant speed, but also changes its direction. In other words, the object has a constant magnitude of velocity (i.e. speed), but its direction is constantly changing. An object moving in a circular path at a constant speed is an example of an object with uniform velocity.

Learn more about constant and uniform velocity here: https://brainly.com/question/17487511

#SPJ1

Answer:

Explanation:

the street and the clouds

Answer:

(a) work required to lift the object is 1029 J

(b) the gravitational potential energy gained by this object is 1029 J

Explanation:

Given;

mass of the object, m = 35 kg

height through which the object was lifted, h = 3 m

(a) work required to lift the object

W = F x d

W = (mg) x h

W = 35 x 9.8 x 3

W = 1029 J

(b) the gravitational potential energy gained by this object is calculated as;

ΔP.E = Pf - Pi

where;

Pi is the initial gravitational potential energy, at initial height (hi = 0)

ΔP.E = (35 x 9.8 x 3) - (35 x 9.8 x 0)

ΔP.E = 1029 J

Answer:

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies

Answer:

Below

Explanation:

PV = n RT     given     re-arrange to

PV/(RT) = n    plug in the given values (since all of the units 'match-up '

1000  *  12.0 / ( 8.31 * 298)  = n = 4.85  moles

The weight will be 80N.

Given :- Weak Gravitational field of moon relative to earth ,

F=1.6N

To find : Weight of a 50Kg mass on Moon .

Principle - Weight and mass although sounding same has different roles in Physics . Mass is the amount of matter that is utilized to build a material while talking about weight means its inclusive of an exertion of earth with the application of mass. Mathematically weight w= mg [Product of mass and gravity ]

Now in this question using basic unitary method we can resolve the ask of question. For example cost of one pen is 2rupee then cost of 2 pens is 4 rupees.

Reasoning- As per question , weight of 1 kg = 1.6N

so weight of 50Kg= 1.6 x 50⇒80N

Hence the amount of 80N equivalent weight is computed.

To understand more about weight -

https://brainly.com/question/28223901

#SPJ1

The vehicle will accelerate by 20 g, or in terms of g. A change in an object's velocity with respect to time might serve as a demonstration of acceleration.

An object's acceleration can be thought of as a vector quantity that exhibits both magnitude and direction. The first derivative of the velocity of an object in time can be used to express acceleration.

Calculating the average acceleration is as simple as dividing the velocity difference by the time change.

Acceleration is calculated as (final velocity minus initial velocity)/time.

The car's starting speed is indicated as u = 30 m/s.

The final speed was 0 m/s.

The duration of the automobile, t = 0.15 s

The typical acceleration is equal to (0–30)/0.15 = –200 m/s2.

Car acceleration is equal to 200/9.8 = 20 g.

Learn more about acceleration here

https://brainly.com/question/176630

#SPJ4

Answer:

14,400m

Explanation:

The formula for calculating speed is S=D/T.

S=speed( in meters per second- m/s)

D=distance(in meters)

T=time( in seconds)

For our case:

S=40m/s

D=?

Time=2 hours=60min x 60 sec=3600seconds

Now make D the subject.

D=S x T

D=4m/s x 3600s=14,400m

Therefore our answer is

14 400 m or 14.4 km

With an object having a mass of 26.94 grams and a volume of 2.568 cubic centimeters, the object is likely to be made of aluminum.

Aluminum is the likely material for the object with a mass of 26.94 grams and a volume of 2.568 cubic centimeters. This conclusion is based on the fact that aluminum has a relatively low density, making it a plausible candidate for an object with these specifications.

Density is defined as mass per unit volume. By dividing the mass (26.94 grams) by the volume (2.568 cubic centimeters), we can calculate the density of the object. The density of aluminum is approximately 2.7 grams per cubic centimeter. Comparing this with the given density value, it becomes apparent that the calculated density is close to the known density of aluminum.

Therefore, it is reasonable to conclude that the object is made of aluminum.

Learn more about Mass

brainly.com/question/11954533

#SPJ11

Answer:

All of the above is the correct answer!!!

Explanation:

mark me brainliest

Using the work done relation, the value of force is 25 Newton.

When a force is applied along a displacement, "work" in physics refers to the energy that is transported to or away from an object. The following situations include work: relocating a table. a door being pulled and pushed. Walking. raising a stone.

The work W that a force F traveling across a distance x exerts on an object is calculated using the formula W=Fs. If the object is moving in the opposite direction from how we expect it to, we add a minus sign.

Work done is equal to displacement times force.

50J = force × 2

f=50/2

Force = 25 Newton.

To learn more about work done from given link

https://brainly.com/question/28199162

#SPJ1

Answer: When a raccoon eats a fruit it eats the seeds that are in the fruit. When the raccoon goes to the bathroom it expels the seeds that are in the feces which plants them.

Answer:

The raccoon is helping to spread the seeds of the plant

Explanation:

According to Kirchhoff's Laws, if ammeters and voltmeters are not to significantly alter the quantities they are measuring, the resistance of an ammeter should be much lower, and the resistance of a voltmeter should be much higher than those of the circuit being measured. Option b is correct.

This is because the electrical resistance of an instrument should be less than the electrical resistance of the circuit element being measured so that the instrument does not disturb the circuit. Kirchhoff's Laws are a set of fundamental principles that govern electrical circuits. They were first described by German physicist Gustav Kirchhoff in 1845. The first of these laws states that the sum of the currents entering any junction in a circuit must be equal to the sum of the currents leaving that junction.

The second of Kirchhoff's Laws states that in any closed loop of a circuit, the sum of the voltage sources must be equal to the sum of the voltage drops. The resistances of the ammeter and voltmeter should be as small as possible to avoid altering the electrical characteristics of the circuit being measured. An ammeter is a measuring device used to measure the electrical current flowing through a circuit, whereas a voltmeter is used to measure the electrical potential difference between two points in a circuit.

For more question on Kirchhoff's Laws click on

https://brainly.com/question/86531

#SPJ4

Answer:

Horizontal = 19.99212 m/s     Vertical = 15.0151 m/s

Explanation:

Horizontal = Cos(36.9) x 25

Vertical = Sin(36.9) x 25

Answer:

roots

Explanation:

Technology is the universe of tools, means, and methods through which we interact with our environment. [TRUE]

Apart from being divided into several types, technology will then provide many benefits in all fields.

1. Easy to receive information

The first positive side of technological development is the ease of receiving information, both locally and internationally. Unlike in the past, in this modern era, we don't have to bother buying newspapers.

2. Easy to communicate

With the messaging application that can send messages, both voice messages and text messages as well as telephone, which will then make it easier to communicate. Unlike the past, communication still has to be through letters and you have to send it to the post office. This letter cannot directly reach the recipient of the letter. It also requires quite expensive costs and takes a long time.

3. More Practical Shopping

In the past we had to go to the market or other shopping places and it took a long time. It's different from now, you can simply order various needs just by using an online shopping application. Then pay for it and wait for the order to arrive at home without the hassle of leaving the house.

4. Learning becomes easier

In the past we had to buy thick books and cost a lot. Right now you only need to buy ebooks, although not a few are paid, but there are many e-books that you can get for free. Besides being able to read books easily, the rapid development of technology will then facilitate the teaching and learning process. Especially during a pandemic like this. The benefits of this technological development are also very necessary for students and teachers who teach.

Learn more about technology at https://brainly.com/question/9171028.

#SPJ4

Answer:

A

Explanation:

Technically, your mouth is part of the digestive system though so I am not sure how accurate this question is.

Answer:

6.075×10²³ Electrons

Explanation:

From the question,

Q = it............................. Equation 1

Where Q = quantity of charge, i = current, t = time.

Given: i = 27 A, t = 1 hours = 1×60×60 = 3600 seconds.

Substitute these values into equation 1

Q = 27×3600

Q = 97200 C.

If, one electron = 1.6×10⁻¹⁹ C,

Therefore, n electron = 97200×1/1.6×10⁻¹⁹ C.

n = 6.075×10²³ Electrons