the force exerted by a machine is called the ____ A. effort force B. resistance force C. mechanical force D. mechanical advantage

Q: A worker pushes a sled with a force of 50 N over a level distance of 10.0 m. If a frictional force…

A: Concept of Net work done on an object moving on frictional surface: A frictional surface causes an…

Q: A different car accelerated from 0.12 m/s to 0.52 m/s. The acceleration of the car was 0.040 m/s2.…

A: Given: The initial velocity of the car is 0.12 m/s. The final velocity of the car is 0.52 m/s. The…

Q: Which of the following is not a unit of power? Select one: a. J/s b. W⋅s c. ft⋅lbs/s…

A: As we know that,            Power is the amount of energy transferred per unit time or rate of doing…

Q: The loaded cab of an elevator has a mass of 2.70 × 10³ kg and moves 193. m up the shaft in 19.0 s at…

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Q: The rate at which work is done is A. power. B. momentum. C. potential energy. D.…

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Q: A computer on the table is at rest. This means that   A. Computer has no energy   B. No net…

A: Balanced forces are the force that acts on the object in an equal magnitude and opposite direction.…

Q: Josh pushes a 48.0-kg shopping cart with a force of 85.0 N in a direction 35.0° below the horizontal…

A: mass of cart = 48 kg Applied force = 85 N direction of force applied (θ) = 35o below horizontal axis…

Q: Kinetic energy depends on A. Mass and volume  B. Weight and height  C. Velocity and weight D.…

A: We know that , Kinetic Energy (K.E) = (1/2)×mass×(velocity)2

Q: The 50 kg uniform crate initially rests on the inclined surface. If a force (F=40t +200 N) as shown…

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Q: George obtained a 1.4 m lever to help him move a large rock in the garden. He placed the fulcrum…

A: A lever is a device used for lifting heavy objects. A lever consists of three parts load, effort and…

Q: Suppose a person wishes to lift a large rock with a lever. If the rock has a mass of 250kg and is…

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Q: A moving hammer drives a nail into the wood. It has kinetic energy. a) True b) False

A: Option a

Q: 1. A roofer is dragging a 15.0 kg bundle of shingles up a roof at a constant speed. The roof is…

A: Here more than three subparts are present in the question. So, the solution for the first three…

Q: 5. A 20.0-N block is attached to the end of a rope, and the rope is looped around a pulley system.…

A:

Q: A suitcase is hanging straight down from your hand as you ride an escalator. Your hand exerts a…

A: Option (a). Is right positive when you ride up and negative when you ride down.