3 years ago

Helpp .....meeee pleaseee

Physics

1 answer:

Lady bird [3.3K]3 years ago

5 0

Answer:

hydrogen

helium

oxygen

Explanation:

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A machine lifts a 35 kg object doing 6860 J worth of work. How much power is produced by the machine if it lifts the object in 4

timofeeve [1]

Answer:

Explanation:

We need the power equation for this which is

P = Work/time

We have everything we need to solve this (the mass of the object is extra information):

P = 6860/4

P = 1715W

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3 years ago

A horizontal line on a displacement-time graph means the object is

r-ruslan [8.4K]

Answer:

traveling further away

Explanation:

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3 years ago

water in a cup and a kettle can have the same temperature even though the quantities are different . give reasons

jekas [21]

Answer:

The reason is because both are exposed to a virtually infinite heat sink, due to the virtually infinite mass and of the surrounding environment, compared to the sizes of either the cup or the kettle such that the equilibrium temperature, $T_{(equilibrium)}$ reached is the same for both the cup and the kettle as given by the relation;

$\infty M_{(environ)} \times c_{(environ)} \times (T_2 - T_1) = m_{1} \times c_{(water)} \times (T_3 - T_2) + m_{2} \times c_{(water)} \times (T_4 - T_2)$

Due to the large heat sink, T₂ - T₁ ≈ 0 such that the temperature of the kettle and that of the cup will both cool to the temperature of the environment

Explanation:

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3 years ago

a car is traveling at velocity of 15m/s.it accelerates to a velocity 35m/s in 10s calculate the acceleration?

vlada-n [284]

Answer:

2m/s is acceleration I hope it helps you

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3 years ago

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Explain what is happening to the skater and why it is happening. (with friction)

Svetlanka [38]