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DaniilM [7]
3 years ago
8

16 POINTS answer correctly and I’ll give you brainliest

Physics
2 answers:
ivanzaharov [21]3 years ago
8 0
I think it is the last one
vlabodo [156]3 years ago
6 0
I think it’s gonna be the 3 one
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A 30kg mass is brought from the earth to the moon what is the weight on the earth
ozzi

Answer:

Solution

verified

Verified by Toppr

Given:

Mass of body = 30 kg

gravitational acceleration on the moon = 1.62 m/s

2

Weight of the body on the moon = Mass of the body×gravitational acceleration on the moon=30×1.62=48 N

8 0
2 years ago
Given that the efficiency of heating your room is roughly 35%, what mass of natural gas is actually necessary to heat your room
Mrac [35]

Answer:

Mass of natural gas needed to heat the room is 350,000BTUs

Explanation:

The heating efficiency of a furnace is never 100% because not all energy is released and not all heat is available to heat the place. A lesser efficiency requires more consumption of fuel. Heating values are used for heating fuels in order to calculate the mass of fuel needed.

The heating value of natural gas is 1,000,000BTUs

Therefore the formular for calculating mass of natural gas needed= Heating value of natural gas×efficiency.

Mass=1,000,000×0.35

Mass=350,000BTUs

3 0
3 years ago
A rock climber wears a 8.1 kg backpack while scaling a cliff. After 28.2 min, the climber is 9.4 m above the starting point. How
mart [117]

Answer:

Explanation:

mass of backpack, m = 8.1 kg

weight of climber, W = 656 N

height raised, h = 9.4 m

time, t = 28.2 min = 28.2 x 60 = 1692 second

weight of backpack, w = m x g = 8.1 x 9.8 = 79.38 N

Work done by the climber on the backpack = mg x h = 79.38 x 9.4 = 746.17 J

Wok done in lifting herself + backpack = (W + w) x h

                                                                 = (656 + 79.38) x 9.4 = 6912.57 J

Power developed by the climber,P = Total work / time

P = 6912.57 / 1692 = 4.09 W

3 0
4 years ago
Which of the following best describes a magnet?
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C
Because magnet involves 2 opposite poles so therefore it would have to be C
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3 years ago
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What does increasing the impulse on an object due to its momentum?
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increaskng the impulse also <u>increases </u><u>momentum</u>

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