3 years ago

Emily is a competitive swimmer. Why does wearing a swim cap help Emily swim faster?

1 answer:

6 0

Answer:

It's helps Emily became when she swims her hair is not in the way creating friction and making her swim faster. friction acts between two metals blocks that slide past each other.

Explanation:

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A voltage of 21.0V across the terminals of a device produces a current of 3.00 mA through the device. What is the resistance of

densk [106]

Answer: 7,000 ohms

Explanation:

From the equation of ohms law V= IR

V=21 volt

I = 3 MA = 3.0×10^-3 A

So by evaluating, we have.

V= IR

21= 3.0×10^-3 × R

Then R = 21/3.0×10^-3

R= 7,000 ohms//.

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3 years ago

1000 kg car takes travels on a circular track having radius 100 m with speed 10 m/s. What is the magnitude of the acceleration o

Hoochie [10]

Answer: B. 1m/s^2

Explanation:

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2 years ago

Suppose you have a container filled with iron and sand. You can separate the iron from the sand if you ____________ so this is a

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I think the answer is A

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2 years ago

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What is N{2}+H{2}=NH{3}

Norma-Jean [14]

Answer:

N2 + 3 H2 = 2 NH3

Explanation:

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3 years ago

Technician A says that low pressure smoke installed in the fuel system can be used to check for leaks. Technicians B says that n

pickupchik [31]

Answer:

A. Technician A only.B.

Explanation: The fuel system of a vehicle is made up of the fuel pump,the fuel filter,the injector or carburettor and the fuel tank. The main function of the fuel system is supply fuel to the engine of a vehicle. In order to check for leakage in the fuel system a small pressure smoke is usually installed in the fuel system.

Nitrogen at low pressure has also been used to check for leakage in the fuel system of a vehicle.

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3 years ago