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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Modern vacuum pumps make it easy to attain pressures of the order of 10?13atm in the laboratory.At a pressure of 8.35×10?14atm and an ordinary temperature of 291.0K , how many molecules are present in a volume of 1.03cm3 ?ow many molecules woul
The period and wavelength of a wave on this string are 3.82 10-3 s and 1.26 m, respectively. Find the linear density of the string.
A Styrofoam cup holding 155 g of hot water at 97°C cools to room temperature, 23.0°C. What is the change in entropy of the room? Neglect the specific heat of the cup and any change in temperature of the room.
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
An electron moves along the z-axis with vz = 4.4 x 10^7 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (x, y, z) positions?
A 3.0-kg block is connected to two ideal horizontal springs having force constants k1 = 14.0 N/cm and k2 = 20.0 N/cm (see diagram). The system is initially in equilibrium on a horizontal frictionless surface. The block is then pushed 1
An X-ray photon scatters from a free electron at rest at an angle of 175 degree relative to incident direction. Find the kinetic energy of the recoil electron
As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, find the velocity of disk 2 at that moment
Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). how much kinetic energy does the ball have
A 500 g mass hangs at the end of a 40 cm long string. It is struck by a 250 g mass moving at 0.5 m/s to the right. Find the maximum height to which the pendulum rises.
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