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Q. A 96N grocery cart is pushed 10m along an aisle by a shopper who exerts a constant horizontal force of 40-N. If all frictional forces are neglected and cart starts from rest, what is the grocery cart's final speed?
Q. A curve of radius 120 m is banked at an angle of 25o. If the coefficient of static friction between road and car is 0.4, what are the maximum and minimum speeds the car can have without skidding?
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
how to Assume the protons started from very far away. Need X and Y componet.
For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 37.5 m/s and initial angle of 38.4° with respect to the horizontal.
The potential at location A is 393 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 781 V, and when released from rest from this spot, the particle arrives at B wit..
Planet Z is 12,000 km in diameter. The acceleration due to gravity on Planet Z is 7.0 m/s2.
A 1.35 block is attached to a spring with spring constant 14. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50. What are The block's speed at the point where = 0.750 A.
A curve of radius 50 m is banked for the design speed of 100 km/h. If the coefficient of static friction is 0.60 (wet pavement), at what range of speeds can a car safely create the curve.
What should the charge (sign and magnitude) of a particle of mass 1.47 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
Assume this is the innermost line of interference (m = 0) and that speed of sound in air is 331 m/s, find the (linear) frequency of the sound in Hz.
0.75 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.003 seconds. The block eventually slides at an angle of 22 de..
What is instantaneous acceleration
A 28.0 {rm kg} child plays on a swing having support ropes that are 2.20 {rm m} long. A friend pulls her back until the ropes are 45.0^circ from the vertical and releases her from rest.
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