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Klio2033 [76]
3 years ago
10

1: Which person is not doing work?

Physics
1 answer:
Trava [24]3 years ago
8 0

Answer:

D

Explanation:

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The transfer of the heat by the direct contact of particles of matter is
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C.c<span>onduction,  is the transfers of heat between substances that are in direct contact.</span>
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3 years ago
Newton did not discover gravity, for early humans discovered that whenever they fell. what newton did discover is that gravity _
galben [10]

What Newton discovered is that  gravity extends throughout the universe.

<h3>What is gravity?</h3>

The term gravity refers to the force that acts on a body in the universe. It is gravity that makes an object to fall when it is thrown up. The force of gravity acts on every object in the universe and it extends through the universe.

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6 0
2 years ago
The fastest pitched baseball was clocked at 47 m/s. Assume that the pitcher exerted his force (assumed to be horizontal and cons
Eduardwww [97]

Answer:

Following are the solution to the given points:

Explanation:

For point a:

Find the schematic of the empty body and in attachment. Upon on ball during the pitch only two forces act:

The strength of the pitcher F is applied that operates horizontally. Its gravity force acting on an object is termed weight, which value is where m denotes mass, and g the acceleration of gravity.

For point b:

160.2\  N

First, they must find that ball's acceleration. You can use the SUVAT equation to achieve that

where

v = 47\  \frac{m}{s} \\\\u = 0 \\\\a =?\\\\d = 1.0 \ m \\\\

Solving for a,

a=\frac{v^2-u^2}{2d}=\frac{47^2-0}{2(1.0)}=1104.5 \ \frac{m}{s^2}

Calculating the mass:

m = 145 g = 0.145 kg

Calculating the force:

F=ma=0.145 \times 1104.5= 160.2 \ N

 For point c:

0.195 times the pitcher's weight

m = 84 \ kg \\\\g = 9.8\ \frac{m}{s^2}\\\\

Solving for W:

W=84 \times 9.8= 823.2 \ N

Now the force of Part B could be defined as the fraction of the mass of the pitcher:  

\frac{F}{W}=\frac{160.2}{823.3}=0.195

4 0
3 years ago
Car's mass is 950kg. It's driven at 100km/h. How big is the kinetic energy?
polet [3.4K]

Answer:

4750000 J

Explanation:

Kinetic Energy= 1/2* mass* velocity²

1/2*950*100²=4750000

8 0
3 years ago
A(n) ? can be used to represent the direction and strength of a force
ExtremeBDS [4]
Units of force are the newton pound.
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3 years ago
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