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IrinaVladis [17]
3 years ago
13

Two football players run down the field. One has a mass of 70 kg and the other has a mass of 100 kg. Which player will be harder

to tackle?
Physics
1 answer:
liq [111]3 years ago
4 0

Answer:

The one with larger mass because of the momentum he has.

Explanation:

Momentum= mass x Velocity

As mass increase momentum increase.

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To lower the voltage from a "120 V" outlet, what is used (first, at least) in most situations
nasty-shy [4]

Answer:

B. Transformer

Explanation:

A transformer is a device that is used to either raise or lower voltages and currents in an electrical circuit. In modern electrical distribution systems, transformers are used to boost voltage levels so as to decrease line losses during transmission. It basically trades voltage for current in a circuit, while not affecting the total electrical power. This means it takes high-voltage electricity with a small current and changes it into low-voltage electricity with a large current, or vice versa.

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3 years ago
The amount of energy that must be absorbed or lost to raise or lower the temperature of 1 g of liquid water by 1°c _____.
Fiesta28 [93]

Answer:

4.2 J

Explanation:

Specific heat capacity: This is defined as the amount of a heat required to rise a unit mass of a substance through a temperature of 1 K

From specific heat capacity,

Q = cmΔt.............................. Equation 1

Where Q = amount of energy absorbed or lost, c = specific heat capacity of water, m = mass of water, Δt = Temperature rise.

Given: m = 1 g = 0.001 kg, Δt = 1 °C

Constant : c = 4200 J/kg.°C

Substitute into equation 1

Q = 0.001×4200(1)

Q = 4.2 J.

Hence the energy absorbed or lost = 4.2 J

6 0
3 years ago
When testing a home for radon, where is the most likely place for the highest detected level? A) the basement, due to ground see
german

Answer:

A

Explanation:

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Why do planetary scientists hypothesize that the moon formed with a molten surface
Verdich [7]

The oldest lunar rock samples are approximately 4.4 billion years old and composed of anorthosite, a mineral that crystallizes and rises to the top of a lava ocean.

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3 years ago
Question 4 of 10
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Answer:

22.3 kg•m/s

Explanation:

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