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kogti [31]
4 years ago
8

The way an object moves relative to a reference point describes the object's _____.

Physics
1 answer:
Oduvanchick [21]4 years ago
6 0

Answer:

a measure of both length and the direction of an object's path from its starting point straight to its ending point. ... Distance between reference points and other locations can be measured in ... It Has Experienced Motion. When an object changes position over time, speed describes how quickly an object changes position.

Explanation:

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a crane lifts a 75 kg mass at a height of 8m. calculate the gravitational potential energy gained by the mass (g= 10N)
Leno4ka [110]

Answer:

6000 J

Explanation:

Potential energy = mass*gravity*height (U = m*g*h)

In this case g = 10 so

U = 75*10*8 = 6000 J (joules) [kg * m^2/s^2]

7 0
3 years ago
How much heat is needed to boil 120 kg of water ?
nekit [7.7K]
Q = mc<span>∆t, where:
q = energy flow
m = mass, 120 000 g
c = specific heat capacity, 4.81 J/gC
</span><span>∆t = change in temperature, ~75 (100 - 25, which is room temperature)

Substituting in the values, we get:
q = 120000 x 4.81 x 75 = 43290000 Joules = 43.29 MJ

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</span>
7 0
3 years ago
What is a common misconception/mistake made when calculating the final velocity for a falling object
vaieri [72.5K]

Answer:

Velocity (v) can be calculated via v = gt, where g represents the acceleration due to gravity and t represents time in free fall. Furthermore, the distance traveled by a falling object (d) is calculated via d = 0.5gt^2.

3 0
3 years ago
What will happen to the Sun after it loses so much mass that its gravity
Natali5045456 [20]

Answer:

The answer is C

Explanation:

7 0
3 years ago
Read 2 more answers
For the electric power transmission system shown in the figure above, what is the ratio ns/np for the step-up transformer? assum
Ann [662]
I am attaching the missing figure

If we assume 100% efficiency, this means that the input power of the transformer must be equal to the output power

We divide output/input

240,000/12,000 = 20

This means that the transformer has a turns ratio of 1:20

<span>ns/np = 20/1 = 20

The voltage is amplified 20 times by the transformer, but this also means that the current decreases by a factor of 20, so the total power remains the same.</span>

7 0
3 years ago
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