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A block of mass 50kg is pushed 20m along a frictionlesssurface by a constant horizontal force of 60N
What is the net work done on the block?
The work done on the block by the support force?
The change in kinetic energy of the block?
Cut a 1 cm cube in dimension along the X, Y, and Z axis 10 times and calculate the volume and surface area at each cut.
A wheel of mass m = 16kg and radius r = 0:5m is connected to a motor that causes it to attain rotational speed of w = 20rads^-1 in 10s, What is the average torque applied to the wheel by the motor
A car with good tires on a dry road can decelerate at about 5.0 m/s2 when braking. Suppose a car is initially traveling at 55 mi/h. (a.) How much time does it take the car to stop.
What is an average speed of this train
A puck slides along the frictionless track shown in the figure with an initial speed of 7.40. Suppose the puck turns all corners smoothly, with no loss of speed.
A skier of mass 70 kg is pulled up a slope by a motor drivencable. What power must a motor have to perform this task
A block of mass m = 2 kg is pushed against a spring of spring constant k = 30 N/m until the spring is compressed by x = 0.1 m. What is the maximum speed of the block
Object A has a position as a function of time given by A(t) = (3.00 m/s)t + (1.00 m/s2)t2, What is the distance between object A and object B at time t = 4s?
A piece of sandston with a bulk volume of 1.3 cc is contained ina 5-cc cell filled with helium at 760 mm Hg. Temperature is maintained constant and the cell is opened to another evacuated cell the same volume. The final pressure in the two vessels..
A person with nearsightedness was prescribed with contact lenses of power -2.0 D. What is the range of object distances that this person can see clearly with the wrong lenses
A converging lens of focal length 0.187 m forms a virtual image of an object. What is the distance between the object and the lens
The intensity of sunlight at the Earth's surface is about 1074.6 W/m2. What is the total power emitted by the Sun
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