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Physics

Kingston Goodwin

1. Some wooden rulers do not start with 0 at the edge, but have it set on a few millimeters. How could this improve the accuracy of the ruler?

2. You find a micrometer that has been badly bent. How would it compare to a new, high-quality meter stick in terms of precision? Its accuracy?

3. Does parallax affect the precision of a measurement that you make? Explain.

4. A box has a length of 18.1 cm and a width of 19.2 cm and it is 20.3 cm tall.

a. what is the volume?

b. how precise is the measure of length? Of volume?

c. How tall is a stack of 12 of these boxes?

d. how precise is the measure of the height of one box? Of 12 boxes?

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Physics

Aaron

When a sailboat overtakes a powerboat, which vessel is the stand-on vessel?

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Physics

Marlie

Which of the following is a false statement about dispersion forces? View Available Hint (s) Which of the following is a false statement about dispersion forces? Dispersion forces are the result of fluctuations in the electron distribution within molecules or atoms. Dispersion forces are present in all atoms and molecules. Dispersion forces result from the formation of instantaneous dipoles in a molecule or atom. Dispersion forces always have a greater magnitude in molecules with a greater molar mass. Dispersion force magnitude depends on the amount of surface area available for interactions.

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Physics

Payten Mclean

A free falling object experiences a unbalanced force

true or false

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Physics

Sylvia Howard

Where is the deepest part of the ocean

A. continental shelf B. trench

C. volcanic island D. continental rise

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Physics

Enrique Mendoza

A weightlifter exerts an upward force on a 1000-N barbell and holds it at a height of 1 meter for 2 seconds. Approximately how much power does the weightlifter exert on the barbell during this time?

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Physics

Judah Perez

Assuming no friction form air, how far will a dropped rock fall in 10 seconds

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Physics

Ari Daniels

A person walks 25.0° North of East for 3.10 km. How far would she have to walk due north and due east to arrive at the same location?

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Physics

Abbie Price

Which elements exist naturally as diatomic molecules

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Physics

Emery

Object B has a mass of 8 kg and was lifted at a rate of 3 m/s. What is the kinetic energy of object B?

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Physics

Annie Castillo

Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

does anyone know witch of newtons laws this is?

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Physics

Ashton Snyder

How are magnetic stripes near mid-ocean ridges evidence for sea-floor spreading?

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Physics

Rene Callahan

Let theta denote the angular displacement of a simple pendulum oscillating in a vertical plane. If the mass of the Bob is m, then the tension in string is

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Physics

Abel Johnston

Why do hurricanes occur between June and November A. this is when water in the Atlantic ocean is warmest

b. this is when the currents around the equator are strongest

c. this is when the winds over the Atlantic ocean are strongest

d. this is when the water in the Atlantic ocean is coolest

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Physics

Volvo

A space probe is launched from Earth headed for deep space. At a distance of 10,000 miles from Earths center, the gravitational force on it is 381 pounds. What is the size of the force when it is at each of the following distances from Earths center?

A) 20,000 miles

B) 30,000 miles

C) 100,000 miles

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