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AlekseyPX
3 years ago
9

A6 kg bag of rice is on the top shelf at a grocery store.

Physics
2 answers:
netineya [11]3 years ago
6 0

Answer:

<h2>117.6 J</h2>

Explanation:

The gravitational potential energy of a body can be found by using the formula

GPE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

GPE = 6 × 9.8 × 2

We have the final answer as

<h3>117.6 J</h3>

Hope this helps you

Kaylis [27]3 years ago
5 0

Answer:

b

Explanation:

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Three guns are aimed at the center of a circle, and each fires a bullet simultaneously. The directions in which they fire are 12
ikadub [295]

Answer:

The unknown mass of the bullet is  m1=3.751x10^{-3} kg

Explanation:

According to Newton's laws of motion, when a net external force acts on a body of mass  <u><em>m</em></u> , it results in change in momentum of the body and is given by:

F=\frac{P}{dt}

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As a consequence, when there are no external forces acting on the body the total momentum remains conserved i.e.

Given:

m_{2}=5.79x10^{-3}kg  \\m_{3}=5.79x10^{-3}kg\\v_{2}=v_{3}=392 \frac{m}{s}\\

For momentum along the y-direction to be zero, it is achieved when the equal masses are moving at angles of  

θ1=180°, θ2=60°, θ3=-60°

Therefore, from conservation of momentum along x - direction:

m_{1}*v_{1}*cos(180)+m_{2}*v_{2}*cos(60)+m_{3}*v_{3}*cos(-60)=0\\m_{1}*605\frac{m}{s}*cos(180)+5.79x10^{-3}kg *392\frac{m}{s}*cos(60)+5.79x10^{-3}kg*392\frac{m}{s}*cos(-60)=0\\

-m_{1}*605+5.79x10^{-3}kg*196\frac{m}{s}+5.79x10^{-3}kg*196\frac{m}{s}=0\\m_{1}*605kg= 2.26968\frac{kg*m}{s}\\m_{1}=3.75 x10^{-3} kg

3 0
3 years ago
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Tresset [83]

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Explanation:sorry need answer

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3 years ago
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A hockey goalie is standing on ice. Another player fires a puck (m = 0.170 kg) at the goalie with a velocity of +41.0 m/s. (a) I
viktelen [127]

Answer:

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For this problem, we'll use the equations: momentum= mass x velocity and impulse = change in momentum, and impulse=force x time.

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final momentum; p2 = 0, because final velocity is 0 m/s

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Finally, impulse= Force x time,

Thus, Force = Impulse/time

Force= 6.97/ (2.33 x 10^(-3)) = 2991.42 N

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4 years ago
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The smooth muscle in the wall of the bladder when stretched triggers the micturition reflex (urination).

<h3>What is a Bladder?</h3>

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Read more about Micturition here brainly.com/question/26493943

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