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BabaBlast [244]
3 years ago
8

The table and graph below show the distances traveled by two different objects. (3 points)

Physics
1 answer:
Aleks04 [339]3 years ago
5 0

Answer:c

Explanation: the speed of object a changes but b travels at constant speed

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A paint brush is dropped from the top of a tall ladder and free falls to the ground. What changes, if any, would be observed of
muminat

Answer:

Explanation:

As the paint brush is dropped from the top of a tall ladder it started free falling

i.e. velocity of brush increases as it falls down due to the acceleration provided by gravity.

We know acceleration due to gravity is the attraction experienced by the object due to earth attraction

Value of acceleration due to gravity is constant i.e. 9.8\ m/s^2

Therefore the correct choice is

velocity is increasing and acceleration is constant

4 0
4 years ago
An undamped 2.47 kg2.47 kg horizontal spring oscillator has a spring constant of 32.8 N/m.32.8 N/m. While oscillating, it is fou
olganol [36]

Answer:

0.631 m

6.53315 J

Explanation:

m = Mass = 2.47 kg

v = Velocity = 2.30 m/s

k = Spring constant = 32.8 N/m

A = Amplitude

In this system the energy is conserved

\dfrac{1}{2}mv^2=\dfrac{1}{2}kA^2\\\Rightarrow A=\sqrt{\dfrac{mv^2}{k}}\\\Rightarrow A=\sqrt{\dfrac{2.47\times 2.3^2}{32.8}}\\\Rightarrow A=0.631\ m

The amplitude is 0.631 m

Mechanical energy is given by

E=\dfrac{1}{2}mv^2\\\Rightarrow E=\dfrac{1}{2}2.47\times 2.3^2\\\Rightarrow E=6.53315\ J

The mechanical energy is 6.53315 J

5 0
3 years ago
suppose a car of 1200kg is moving with a velocity of 40km/hr therefore its kinetic energy is not zero. 1. explain briefly what h
mezya [45]

Answer:

Explanation:

For starters begin with a warning not to touch the brake drums. All of the KE is transferred to the brake drums. The result is a large rise in temperature. Heat. If you press hard on the brakes, rubber is left on the road and there is heat involved in that too.

8 0
3 years ago
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But how can the only number that is less than 4 or equal to 4 be 8<br>​
Assoli18 [71]

However, consequently and moreover, we need to know everything before "but".

4 0
3 years ago
What must be the same for any two resistors that are connected in a series
gulaghasi [49]
The potential difference must be the same
4 0
3 years ago
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