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Question: What is the acceleration of a 5.0 kg object acted on by a resultant force of 35.0 N? What is the acceleration of a 2.5 slug object acted on by a resultant force of 44.0 lbs?
Four point charges have equal magnitudes. Three are positive, and one is negative, Calculate the ratio of the largest to the smallest net force magnitude
A 30 g ball of clay traveling east at 2.0 m/s collides and sticks together with a 30 g ball of clay traveling north at 4.0 m/s. What is the speed of the resulting ball of clay
A hoist is powered by an electric motor that draws 4.82 kilowatts of electric power. How long will it take this hoist to lift a 2550 kg mass to the top of a 75.4 m high building
In a friendly game of handball, you hit the ball essentially at ground level, How high is the ball when it hits the wall
Convex mirrors are often used in sideview mirrors on cars. Many such mirrorsdisplay the warning “Objects in mirror are closer than they appear.” Assume a convex mirror has a radius of curvature of magnitude 14 m and that there is a car that is 11 ..
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.695 s to reach the opposite tower, 20.0 m away. If a 1.00-m length of the ..
Two objects of equal mass collide on a horizontal frictionless surface. What is the speed of the composite body (A + B) after the collision
A person weighs 689 N and the head is 53 N the average density of the person is 1010 kg/cubed meters how much force in N is required to keep a persons head out of the water.
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.0 MJ, What is the moment of inertia of the flywheel
A copper rod has a length of 1.4 m and a cross-sectional area of 4.2 10-4 m2. What is the mass of ice per second that melts
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 7.13 103 W. How much energy does it deliver into a home during 24 h of continuous operation? How much energy does it extract from the outside air?
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