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Physics

Yandel Mccullough

A 1.2 kg block of wood hangs motionless from strings. A 50 gram bullet, traveling horzontally, strikes the block and becomes embedded inside the block. Immediately after the bullet becomes embedded in the block, the block is observed to have a speed of 8.0 m/s. What was the speed of the bullet before it hit the block

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Physics

Travis Bernard

What was J. J Thompson working on when we discovered the electron?

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Physics

Madyson Thomas

About how many weeks does it take the Moon to go from a full Moon phase to a third quarter phase? A. 1 B. 2 C. 3 D. 4

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Physics

Jakobe Good

How to recount kilograms to force?

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Physics

Valerie Contreras

To get to school in the morning, Peter walks 2.00 km North, then 2.00 km East ad finally 1.00 km North-West. What is the distance and bearing of the school from Peter's house?

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Physics

Mayer

What is the smallest particle of the element iron (fe) that can be as iron?

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Physics

Cristopher Liu

Each inner energy level of an atom has a maximum number of it can hold

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Physics

Jamya

A 100 kg roller coaster car is located at the top of a hill where the height is 20 m. What is the velocity when it reaches the bottom of the hill? 5.5 m/s 11.2 m/s 16.7 m/s 19.8 m/s

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Physics

Jayden Wise

What is the transit of Venus?

1. When the orbit of Venus crosses the orbit of Earth

2. When Venus can be seen from Earth and appears to shade the Sun

3. When Venus can be seen from Earth and appears to be shaded by the moon

4. When Venus can be seen from Earth and appears to trace a path across the face of the Sun

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Physics

Mike Summers

The orbital velocity of the Earth about the sun is 30 km/s. If the Earth were suddenly stopped in its tracks, it would simply fall radially into the sun. Devise a plan whereby a rocket loaded with radioactive wastes could be fired into the sun for permanent disposal. How fast and in what direction with respect to the Earth's orbit should the rocket be fired?

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Physics

Mcduff

Two vectors A and B have components (0,1) and (-1,3), respectively. What is magnitude of the sum of these two vectors?

a) 3.2

b) 4.1

c) 3.9

d) 2.8

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Physics

Rosales

The net force on any object moving at constant velocity is

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Physics

Picasso

Huifen weighs herself on her bathroom scales. She says "My weight is 54 kg!"In Science, what Huifen said would be considered wrong. Explain why.

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Physics

Anna Barber

What is a derived unit

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Physics

Lizbeth Palmer

Which choice defines AC and DC correctly?

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