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3 years ago

Force is measured by: a) ammeter b) spring balance c) two pan balance d) ruler

Physics

2 answers:

laila [671]3 years ago

8 0

Answer:

force can also be considered as weight so

Spring balance is used for measuring Force.

Explanation:

Bezzdna [24]3 years ago

3 0

Is measured by Spring balance.

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A 62.6-kg skateboarder starts out with a speed of 2.18 m/s. He does 113 J of work on himself by pushing with his feet against th

n200080 [17]

Answer:

a. Wgra=786.09J

b. 1.28m

Explanation:

The change in the potential energy is the work done by the gravitational force.

For this problem you have to take into account that the total work done is given by the change in the kinetic energy

$W_{tot}=\Delta E_k=\frac{m}{2}(v_f^2-v_0^2)\\W_{tot}=\frac{62.6kg}{2}((6.55\frac{m}{s})^2-(2.18\frac{m}{s})^2)=1194.09J$

Furthermore the total work is the contribution of the work done by the skater, the gravitational force and the friction

$W_{tot}=W_{ska}+W_{fric}+W_{gra}$

(a) by separating Wfric you have

$W_{gra}=W_{tot}-W_{fric}-W_{ska}=1194.09J-295J-113J=786.09J$

(b) It is only necessary to use the expression for the work done by gravitational force

$W_{grav}=mgh\\h=\frac{W_{grav}}{mg}=\frac{786.09J}{(62.6kg)(9.8\frac{m}{s^2})}=1.28m$

HOPE THIS HELPS!!

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3 years ago

Krish has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured.

Tamiku [17]

Answer:

It is a liquid because it flows.

Explanation:

because liquids dont have to be a certain color they are liquid as long as they flow

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3 years ago

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Suppose the initial position of an object is zero, the starting velocity is 3 m/s and the final velocity was 10 m/s. The object

Soloha48 [4]

The displacement of an object is obtained by taking out the area of the rectangle plus the area of the triangle under the line.

<h3>What is acceleration?</h3>

Acceleration is defined as the rate change of velocity with time.

acceleration a = (Δv) / (Δt)

Suppose the initial position of an object is zero, the starting velocity is 3 m/s and the final velocity was 10 m/s. The object moves with constant acceleration.

In velocity time graph, the slope determines the acceleration and the area under the curve gives the value for the displacement.

Thus, the displacement of an object is obtained by taking out the area of the rectangle plus the area of the triangle under the line.

Learn more about acceleration.

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2 years ago

One advantage of a fever is that it can slow down the

AlexFokin [52]

One advantage of a fever is that it can slow down the growth of pathogens by denaturing their proteins.

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4 years ago

An ore car of mass 35000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 17 m lower vert