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Physics

Cale Andrews

A hammer head of mass 600g, produces force

of 360N when it strikes the head of a nail Explain how it's possible for the hammer to

drive the nail into a piece of wood, yet a weight of360N resting on the head of

Nail would not?

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Physics

Tori Copeland

A ball is hit straight up with an initial speed of 28 meters per second. What is the speed of the ball 2.2 seconds after it is hit? [Neglect friction.]

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Physics

Mylie Miranda

What is the approximate pressure of air at sea level?

0 kPa

101 kPa

10 kPa

1000 kPa

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Physics

Hurley

The steps in the heating of a metal seat in a park are listed below: Step 1: Heat travels from the sun to Earth Step 2: Heat travels through atmosphere to the top of the seat Step 3: Heat from the top of the seat travels through the seat to the lower parts of the seat Which statement is correct? Heat is transferred by radiation in Step 1 and Step 3.

Heat is transferred by radiation in Step 1 and Step 2.

Heat is transferred by convection in Step 1 and Step 2.

Heat is transferred by convection in Step 1 and Step 3.

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Physics

Kiana Harvey

If a ride at disneyworld goes from rest to 27 m/s in 2.8 seconds and the mass of the ride and riders together 5000kg. What is the average power required to do this? Give your answers in both watts and horsepower

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Physics

Wendy Schaefer

Which of the following is a property of an object not a result of something happening to the object? Select one: weight a. b. inertia C. momentum d. force

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Physics

Madyson Murphy

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?

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Physics

Shelby Jefferson

Which sampling method subdivides the population into categories sharing similar characteristics and then selects a sample from each subdivision?

Choose the correct answer below.

a. Stratified

b. Convenience

c. Systematic

d. Cluster

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Physics

Fernanda Wright

A person opens a 2 - liter bottle of cola at a picnic. If the cap is left off the bottle, the cola will become 'flat' or lose its carbonation. Which statement below best summarizes why the cap must be kept tightly in place if the cola is to remain fresh?

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Physics

Joanna Robinson

A 1,800kg car has a momentum of - 50,400kgm/s. What is the velocity of the car?

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Physics

Amiah

A machine with a mechanical advantage of 2.5 requires an input force of 120 newtons. What output force is produced by this machine?

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Physics

Tristin Mccarthy

Which of the phases below are able to be compressed? A) Liquid only. B) Liquid and Gas. C) Solid only. D) Gas only

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Physics

Pop Tart

How would you select a sicience fair project

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Physics

Terry

Which statement accurately describes the difference between mass and weight?

O Mass and weight change based on location.

Mass remains the same while weight changes based on location.

O Weight remains the same while mass changes based on location.

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Physics

Guest

A parallel circuit contains four branches. One branch has a current flow

of 0.8 A, another has a current flow of 1.2 A, the third has a current

flow of 0.25 A, and the fourth has a current flow of 1.5 A. What is the

total current flow in the circuit?

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