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a 30 kg child on a sled slides down a frictionless slope angled at 15 degrees with respect to the horizontal. A wind force directed horizontally acts on the child.
(a) draw a free-body diagram for the child.
(b) what is the magnitude of the wind force, F, such that the acceleration of the child is 1 m/s^2.
a pendulum has a mass of 0.5 kg and starts at a height of 0.3m. if it is released from rest how fast is it going
A block of mass 12 kg slides from rest down a frictionless 35 degree incline and its stopped by a strong spring with k= 3x10^4 N/m. what is the total energy of block initially
What will transform in terms of the observable properties of the black hole as this process continues
A block of mass 2.50 kg is pushed 2.00 m along a frictionless horizontal table by a constant 16.0 N force directed 25.0° below the horizontal, Determine the work done by the force of gravity
At an instant in time, an electron has a velocity of 5i + 3j - 4k km/s in a region of space, Find the acceleration of the electron at this instant
Which statement is true concerning the magnitude of the net force on the plane.
he driver finds that the car bounces up & down with maximum amplitude when he drives at a speed of 4.2 m/s (approx 9.4 mph). The car then stops & picks up three more 110 kg passengers. By how much does the car body sag on its suspension when these ..
An object has a kinetic energy of 317 J and the momentum of magnitude 24.0 kg · m/s.
Romeo(77.0kg) entertains Juliet(55.0kg) by playing his guitar from the rear of heir boat at rest in still water, 2.70 m away from Juliet, How far ados the 80.0 kg boat move toward the shore it is facing
A physics professor is pushed up a ramp inclined upward at an angle 34.0 degrees above the horizontal as he sits in his desk chair that slides on frictionless rollers, Use the work-energy theorem to find his speed at the top of the ramp
A horizontal pipe carries a smoothly flowing liquid with density 1.27 × 103 kg/m3. What is the pressure difference between location 2 and location 1
A piece of metal is pressed against the rim of a 2.8- kg, 25- cm-diameter grinding wheel that is turning at 2800 rpm. how much force must you press to stop the wheel in 20.0 s
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