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Kenna
PhysicsPhysics
A 10 Newton effort force is required to lift a 10 kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever? [The fulcrum is placed 0.5m from the box.]
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Sage Parker
PhysicsPhysics
Bailee bad a gross income of 2358.33 during each pay period in 2009. if she got paid monthly, how much of her oay was defucted for fica in 2009?
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Leo Burton
PhysicsPhysics
If a hockey puck is made to slide along a straight line on a completely frictionless surface, which statement about the motion of the hockey puck is true?

The hockey puck will come to a halt immediately.

The hockey puck will continue moving with constant velocity along a straight line.

The hockey puck will accelerate and continue moving in straight line.

The hockey puck will continue moving in random direction.
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Charlize
PhysicsPhysics
Why is an si measurement system so important in the science comunity?
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Cecelia Combs
PhysicsPhysics
A stone falls from a ledge and takes 8 seconds to hit the ground the stone has an original velocity of 0m/s how tall is the ledge
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Yosef Mclaughlin
PhysicsPhysics
Making a product more user-friendly based on the results of prototype tests is an example of input.
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Mcdowell
PhysicsPhysics
What is the pressure amplitude for the threshold of human hearing?
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Olivia Floyd
PhysicsPhysics
1. Does the validity of the principle of conservation of momentum depend on the validity of Newton's 3rd law of motion?
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Kamora Meyer
PhysicsPhysics
A mass of 8 kg. moves at a rate of 14.3m / sec. what is the KE developed by the mass
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Rosa Stout
PhysicsPhysics
The uniform circular motion of a space station can be used to create artificial gravity. This can be done by adjusting the angular speed of the space station, so the centripetal acceleration at an astronaut's feet equals g, the magnitude of the acceleration due to the earth's gravity. If such an adjustment is made, what will be true about the acceleration at the astronaut's head due to the artificial gravity?
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Guest
PhysicsPhysics
A machine called a centrifuge is used in
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Emeline
PhysicsPhysics
Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 26°C. The skin area of the individual is 1.2 m2.

(a) Assuming the emissivity is 0.80, find the net loss of radiant power from the bod

(b) Determine the number of food Calories of energy (1 food Calorie = 4186 J) that is lost in one hour due to the net loss rate obtained in part (a). Metabolic conversion of food into energy replaces this loss.
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Duncan Espinoza
PhysicsPhysics
Which of the following is NOT a way to increase energy efficiency?

a.

putting insulation in your home

c.

using public transportation

b.

recycling

d.

using low heat lightbulbs
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Alia Mcknight
PhysicsPhysics
A 20kg child lifts his 0.5kg ball of the floor to put it away on his bookshelf 1.5 meters above the ground. How much work has he done?
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Tobias Flynn
PhysicsPhysics
When you touch a hot object, a reflex controls your movements. but how do you know the object was hot?
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