Find magnitude of momentum change during collision
A person of weight 80 kg jumped off a platform of height 1 m, bounced off and ended up on the same platform. What is the magnitude of the momentum change during the collision, in SI units?
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The coil of a generator has a radius of 0.16 m. When this coil is unwound, the wire from which it is made has a length of 9.50 m. What is the peak emf of this generator
Sheena can row a boat at 3.03 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.55 mi/h. How long does it take her to cross the river
The two strands of the helix-shaped DNA molecule are held together by electrostatic forces as shown in the Figure 16-44 in the textbook. Estimate the net force between a cytosine and a guanine
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 88.2% of the initial activity. What is the half-life of this material
A car weighing 10 N on a hill which makes an angle of 20 degree with the horizontal. Find the components of car's weight parallel and perpendicular to the road?
Catapult fires an 800-kg rock with an initial velocity of 100 m/sat a 40° angle from ground. What is the magnitude of the horizontal impulse
Jonathan is riding a bicycle and encounters a hill of height h. At the base of the hill, he is traveling at a speed vi. What is the change in potential energy stored in Jonathan's body
Three resistors havin resistances of R1= 1.66?, R2= 2.44?, and R3= 4.94? respectively, are connected in parallel to a 28.2V battery that has negligible internal resistance. Find the power dissipated in each resistor
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
What is the magnitude and direction of the impulse imparted by the floor to the ball?
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