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A block of mass m = 2.00 kg is released from rest at h = 0.400 m above the surface of a table, at the top of a θ = 20.0° incline as shown in the figure below. The frictionless incline is fixed on a table of height H = 2.00 m. Determine the acceleration of the block as it slides down the incline
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.23 m/s. What is his speed when he catches up
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, What is its kinetic energy at the end of this interval
A train is travelling up a 3.2 degree incline at a speed of 3.55 m/s as the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
An open railroad car of mass 2496 kg is coasting with an initial speed of 17 m/s on a frictionless, horizontal track. How much water (in kilograms) has accumulated in the car
question a car goes faster and fast backward down a long driveway. the cars velocity changes from -2ms to -9ms in 2
A particle with a charge of +8.4 µC and a speed of 45 m/s enters a uniform magnetic field whose magnitude is 0.32 T. find the magnitude and direction of the magnetic force on the particle
Two railroad freight cars with masses 110 Mg and 140 Mg approach with equal speeds of 0.350 m/s. They collide, the lighter car rebounding opposite its original direction at 0.330 m/s.
The potential difference across a coil is 2.93V at an instant when the current is 347mA, changing at a rate of 327mA/s. At a later instant, What is the inductance of the coil
A 23.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 33.0° with the vertical, find the child's speed at the lowest position
She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Examine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes.
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