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4 years ago

The force of friction always opposes the _______.

Physics

2 answers:

Ierofanga [76]4 years ago

8 0

Answer:

motion

Explanation:

uh look it up?

LenKa [72]4 years ago

5 0

The force of Fricition always opposes the force applied

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explain why astronauts around the earth either in spaceship, a space station, or on a spacewalk appear to be weightless but are

IrinaK [193]

Answer:

Zero gravity

Explanation:

Astronauts around the earth either in spaceship, a space station or on a space walk appear to be weightless because of the zero gravity in such environment.

Weight is a function of the mass and acceleration due to gravity a body has.

Weight = mass x acceleration due to gravity

In a place where acceleration due to gravity is 0, the weight would be zero and a person would appear to be weightless.

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3 years ago

Which planet spins the slowest in our solar system?

Kipish [7]

Answer: Venus

Explanation: Venus is the slowest revolving planet in our solar system, rotating once every 243 days, making.

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3 years ago

A 0.9 kg metal bolt is heated to an unknown initial temperature. It is then dropped into a Calorimeter containing 0.15 kg of wat

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3 years ago

The 2nd largest hailstone every measured fell in Aurora, Nebraska, in 2003. The circumference of that hailstone was 16 inches. U

8_murik_8 [283]

Answer:

1. What was the diameter of the hailstone in inches_5.09_ and in cm___12.92___ and in feet ____0.42___?

2. What was the total volume of the hailstone in cubic inches___68.64___ and cubic feet____0.03____?

3. What was the fall velocity of this hailstone in m/s_____2.584____ and in mph___5.78_____?

Explanation:

1. If the circumference (L) of the stone is 16 inches, then from the following equation

$L = 2\pi R$

$R = \frac{L}{2\pi} = \frac{16}{2\pi} = 2.54 ~inches$

$D = 2R = 5.09 ft$

1 inch = 2.54 cm = 0.08 ft, so 5.09 inches = 12..92 cm = 0.42 ft

2. The total volume is

$V = \frac{4}{3}\pi R^3 = \frac{4}{3}\pi (2.54)^3 = 68.64~in^3\\68.64 ~in^3 = 0.03~ft^3$

3. The fall velocity is V = kd, where k = 20 if d is in cm. Let's calculate the fall velocity in cm.

$V = 20*12.92 = 258.4~cm/s = 2.584~m/s$

2.584 m/s = 5.78 mph

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3 years ago

The units for potential energy PE are?

rewona [7]

The units for potential energy PE are Joules (J)

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3 years ago

Read 2 more answers