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3 years ago

What equation do we use to solve?

Physics

1 answer:

aev [14]3 years ago

4 0

V(y) is the same in all cases so time taken for all cannonballs to go up and down is the same.

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which symbol in the first law of thermpdynamics represents energy that moves from a hot object to a cooler object?

Marysya12 [62]

The triangle <span>in the first law of thermodynamics, represents energy that moves from a hot object to a cooler object.</span>

4 0

2 years ago

Average speed equals distance divided by time. on a journey to the

Tanzania [10]

The average speed will be 2.38×10⁶ m/sec.The average speed of an object indicates the pace at which it will traverse a distance. The metric unit of speed is the meter per second.

<h3>What is the average speed?</h3>

The total distance traveled by an object divided by the total time taken is the average speed.

The speed calculated at any particular instant of time is known as the instantaneous speed.

Given data;

Distance travelled = 4.12x10¹⁶ meter

Time period= 1.73x10¹⁰ sec

The average speed is found as

$\rm V_{avg}= \frac{d}{t} \\\\\ \rm V_{avg}= \frac{4.12 \times 10^{16}}{1.73 \times 10^{10} } \\\\\ V_{avg}=2.38 \times 10^6 \ m/sec$

Hence, the average speed will be 2.38×10⁶ m/sec.

To learn more about the average speed, refer to the link;

brainly.com/question/12322912

#SPJ1

6 0

2 years ago

A sprinter starts from rest, and reaches their top speed of 12 m/s in 3 seconds.

mezya [45]

Answer:

there u go :)

Explanation:

4 0

2 years ago

A model hydroelectric power station produces just enough electric power to light a 6.0 W lamp. The model is found to be 80% effi

Savatey [412]

You said that the useful output power from the model is 6 watts. You also said that the model is 80% efficient. We have no reason to doubt your word, so we know that

(useful output) / (input power) = 80% or 0.8

(6 watts) / (input power) = 0.8

Multiply each side by (input power): 6 watts = (0.8) (input power)

Divide each side by 0.8 : Input power = (6 watts/ 0.8)

<em>Input power = 7.5 watts</em>

4 0

3 years ago

Ice melting is not a chemical change because

prohojiy [21]

Melting ice is not a chemical reaction, but is a physical change. There is no chemical reaction involved during the melting process, and it is still the same molecular substance.

7 0

3 years ago