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Pavel [41]
3 years ago
5

Find the Force a Watermelon hits the ground with when it is dropped off a roof and has a mass of 18 kg

Physics
1 answer:
ANEK [815]3 years ago
6 0

Answer:

Explanation:

Weight = Force

Weight = mass x gravity

Weight = 18 kg x 9.81

Weight = 176.58 N

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Please help these with these two questions
Gennadij [26K]
<h2>If the distance between Earth and moon is increased , the gravitational force will decrease by a proportional amount .</h2><h2>The iron filings sprinkle around the magnet are arranged in regular pattern . The reason for this is that magnet can attract magnetic substances through various materials .</h2>

Explanation:

If the distance between Earth and moon is increased , the gravitational force will decrease by a proportional amount .

The iron filings sprinkle around the magnet are arranged in regular pattern . The reason for this is that magnet can attract magnetic substances through various materials .

8 0
3 years ago
A recent home energy bill indicates that a household used 475475 kWh (kilowatt‑hour) of electrical energy and 135135 therms for
faltersainse [42]

Answer:

Explanation:

Given that,.

A house hold power consumption is

475 KWh

Gas used is

135 thermal gas for month

Given that, 1 thermal = 29.3 KWh

Then,

135 thermal = 135 × 29.3 = 3955.5 KWh

So, total power used is

P = 475 + 3955.5

P =4430.5 KWh

Since 1 hr = 3600 seconds

So, the energy consumed for 1hr is

1KW = 1000W

P = energy / time

Energy = Power × time

E = 4430.5 KWhr × 1000W / KW × 3600s / hr

E = 1.595 × 10^10 J

So, using Albert Einstein relativity equation

E = mc²

m = E / c²

c is speed of light = 3 × 10^8 m/s

m = 1.595 × 10^10 / (3 × 10^8)²

m = 1.77 × 10^-7 kg

Then,

1 kg = 10^6 mg

m = 1.77 × 10^-7 kg × 10^6 mg / kg

m = 0.177mg

m ≈ 0.18 mg

5 0
3 years ago
Two oppositely charged parallel plates separated by an insulator creates a capacitor. When a conductor connects the two plates,
Elza [17]

Answer:

There is an electric potential between the plates which is released as the

capacitor discharges.

Explanation:

In Electrical or Magnetic forces,  opposite charges generate a force field.

8 0
3 years ago
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What are the options? 

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Tina is waiting at the bus stop. She sees and hears an ambulance as it approaches and passes by her. Which two changes in the lo
Inga [223]
The siren will seem to get louder as the ambulence approches, and it will seem to get quieter as the ambulence drives away.
3 0
4 years ago
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