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Physics

Hanna

Which rocky planet has the strongest magnetosphere?

A) Mars

B) Earth

C) Mercury

D) Venus

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Physics

Carley Cisneros

Which of the following is the correct SI unit measuring amount of material contained in a solid sphere

Kilograms

Tons

Ounces

Pounds

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Physics

Guest

Consider a particle with initial velocity v⃗ that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis. What is the x component v⃗ x of v⃗? What is the y component v⃗ y of v⃗?

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Physics

Jamison Steele

Which is heavier, the earth or the moon

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Physics

Guest

if the separation between two masses is doubled, does the gravitational force between them increase or decrease? By what factor?

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Physics

Teresa

A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is a (t) = 66 t, at which time the fuel is exhausted and it becomes a freely "falling" body. 15 seconds later, the rocket's parachute opens, and the (downward) velocity slows linearly to - 23 ft/s in 5 s. The rocket then "floats" to the ground at that rate.

Determine the position function s and the velocity function v (for all times t).

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Physics

Kasen Brennan

If a man walks 17m east and then 17m south, the magnitude of the man's displacement is

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Physics

Ezra Underwood

Which type of mass movement makes a pattern of wrinkles, or terraces, on hillsides?

landside

mudflow

soil creep

rock slide

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Physics

Ariana Odonnell

How is sun related to nuclear, electromagnetic, and heat energy?

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Physics

Anabelle Briggs

Studies of gymnasts show that their high rate of injuries to the Achilles tendon is due to tensions in the tendon that typically reach 12 times body weight. That force is provided by a pair of muscles, each exerting a force at 23 ∘ to the vertical, with their horizontal components opposite.

For a 53-kg gymnast, find the force in each of these muscles.

Express your answers using two significant figures separated by a comma.

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Physics

Jewel Montes

The total mechanical energy of a system: A) can never be negative. B) is constant, if only conservative forces act. C) is either all kinetic energy or all potential energy, at any one instant. D) is not uniquely determined for most naturally occurring systems. E) is equally divided between kinetic energy and potential energy.

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Physics

Jolie Gardner

If the torque on an object adds up to zero: A) the object could be accelerating linearly but it could not be turning. B) the object is at rest. C) the object cannot be turning. D) the object could be both turning and accelerating linearly. E) the forces on it also add up to zero.

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Physics

Aubree Foster

What to do if vehicle struck by lightning

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Physics

Kimberly Conrad

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?

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Physics

Gideon

What is the name given to

the system of units use

the united States?

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