Physics question and answers for May 16, 2024
- Q A 1 kg plastic ball is rolling forward at 0.61 m/s. It collides with a second plastic ball of mass 1.9 kg, also rolling forward at 0.22 m/s. After the...
- Q A 1.54 kg plastic ball is rolling forward at 1.12 m/s. It collides with a second plastic ball of mass 0.87 kg, also rolling forward at 0.81 m/s. After the...
- Q A rubber ball with a mass of 0.30 kg is dropped onto a steel plate. The ball's velocity just before impact is 4.5 m/s (down) and just after impact is...
- Q A rifle with a mass of 3.2 kg shoots a 0.29 kg bullet. If the rifle's recoil velocity is 7.4 m/s, how fast is the bullet moving? Round your answer...
- Q Colin, who has a mass of 38.2 kg, is roller skating toward his mom at -2.3 m/s. Mom, with a mass of 72.8 kg is skating toward Colin at 4.4...
- Q A 2 kg mass moving to the right makes an elastic head-on collision with a 4 kg mass moving to the left at 4 m/s. The 2 kg mass reverses...
- Q A 6 kg mass moving at 3 m/s collides with a stationary 4 kg mass. Afterwards the 4 kg mass moves off at 2 m/s.a. What is the final momentum...
- Q A golf club has 10 kg m/s of momentum when it hits a golf ball that is at rest. After the collision, the golf club has a momentum of 1...
- Q A 0.3 kg plastic ball is rolling forward at 0.8 m/s. It collides with a second plastic ball of mass 1.85 kg, also rolling forward at 0.96 m/s. After the...
- Q Four particles of masses 4.00kg, 3.00kg, 3.50kg and 5.50kg are located at (4.00,5.00), (3.25, 6.20), (-2.00, 6.50) and (2.50, -7.0) respectively.a) where is the center of mass located?b) What is...
- Q NASA is launching a probe (m = 500 kg) at a small asteroid (m = 2000 kg). The asteroid is traveling at 100 m/s, and the probe is moving perpendicularly...
- Q A 65.0 kg ice skater standing on frictionless ice throws a 0.15 kg snowball horizontally at a speed of 32.0 m/s. At what velocity does the skater move backward?A. 0.07...
- Q A 3.8 kg bird slows from 6.8 m/s to 4.3 m/s while looking for a good tree to land in. What is its change in momentum? Round your answer to...
- Q A 908 kg car slows from 30.3 m/s to 7.8 m/s. What is its change in momentum? Round your answer to the nearest 0.1. Do not add units. YES, your...
- Q A train car of mass 3,366 kg sits at rest on the track. A second car ofmass 3,161 kg moving at 4.2 m/s slams into it and they stick together.What...
- Q 1. Weylan is at the county fair playing some of the games. At one booth, he throws a 0.75-kg ball forward with a velocity of 21.0 m/s inorder to hit...
- Q Aliya is rolling along on her 4.0-kg long board with a constant speed of 3.0 m/s when she jumps off the back and continues forward with a velocity of 2.0...
- Q Running at 2.0 m/s, Marty, the 45.0-kg quarterback, collides with Biff, the 90.0-kg tackle, who is traveling at 7.0 m/s in the other direction. Upon collision, Biff continues to travel...
- Q A 100 N applied force is at 22.5 degrees to the 2 meter radius of a rotating disk. What is the torque?
- Q Weylan is at the county fair playing some of the games. At one booth, he throws a 0.75-kg ball forward with a velocity of 21.0 m/s in order to hit...
- Q A 320.-kg reindeer stands in the middle of the railroad tracks, frozen by the lights of an oncoming 10,000.-kg train that is traveling at 10.0 m/s. The engineer sees the...
- Q Johnny and Francis are participating in the Roller Skating dance championship. While 73.0-kg Johnny roller skates backwards at 3.0 m/s, 57.0-kg Francis jumps into his arms with a velocity of...
- Q A system consists of three particles with these masses and velocities: mass 3.00 kg, moving north at 3.00 m/s; mass 4.00 kg, moving south at 4.40 m/s; and mass 7.00...
- Q Two skaters collide and grab on to each other on frictionless ice. One of them, of mass 77.0 kg, is moving to the right at 4.00 m/s, while the other,...
- Q On a frictionless horizontal air table, puck A (with mass 0.253 kg) is moving toward puck B (with mass 0.375 kg), which is initially at rest. After the collision, puck...
- Q A rifle has a mass of 5.20 kg and it fires a bullet of mass 10.0 g at a muzzle speed of 820 m/s. What is the recoil speed of...
- Q A 4,000-kg truck traveling with a velocity of 10 m/s due north collides head-on with a 1300-kg car traveling with a velocity of 20 m/s due south. The two vehicles...
- Q A 0.100-kg ball collides elastically with a 0.300-kg ball that is at rest. The 0.100-kg ball was traveling in the positive x-direction at 5.80 m/s before the collision. What is...
- Q Consider two less-than-desirable options. In the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. In the second option you are driving...
- Q A big ball, mass M=10m, speed v, strikes a small ball, mass m, at rest. Could the following occur: The big ball comes to a complete stop and the small...
- Q If the velocity of a pitched ball has a magnitude of 43.0 m/s and the batted ball's velocity is 59.5 m/s in the opposite direction, find the magnitude of the...
- Q Correct Question No 19 Options h 90 5 R InCorrect A body is projected vertically upwards from the R bottom of a crater of moon of depth where Ris 100...
- Q A satellite is moving with a constant speed V in a circular orbit about the earth An object of mass m is ejected from the satellite such that it just...
- Q Three masses each equal to m are placed at the three corners of a square of side 1 The magnitude of gravitational force on unit mass at the fourth corner...
- Q The orbital velocity of an artificial satellite in a circular orbit just above the earth s surface is v For a satellite orbiting at an altitude of 3 4 of...
- Q Figure shows sun S such that the area of triangle csa is the area of the ellipse See figure With db as the semimajor axis and c as the semiminor...
- Q 81 A body is thrown vertically upwards with a velocity u It will fall back at a point displaced to the west by a distance 1 2 14h a c...
- Q 6 50 A projectile is fired vertically upward from the surface of earth with a velocity Kv where v is the escape velocity and K 1 Neglecting air resistance show...
- Q 16 A satellite S is moving in an elliptical orbit around the earth The mass of the satellite is very small as compared to the mass of the earth Then...
- Q 6 You are riding in an elevator that has an acceleration of 3 m s upwards Suppose your normal weight is 60 kg on level ground on the earth If...
- Q An electron is confined to a narrow evacuated tube of length 5 m the tube functions as a one dimensional infinite potential well a What is the energy difference between...
- Q g A small solid ball is projected vertically up from 3 ground at a large initial speed u gR where g is acceleration due to gravity on the surface of...
- Q on an inclined plane forming an angle a with the horizontal fig and is imparted an initial velocity vo Find how the velocity of the disc depends on the angle...
- Q 3 identical point particles of mass M move in such a way that distance between particles is which remain constant Only force is the gravitational force between particles Then magnitu...
- Q v In a double star two stars one of mass m and the other of 2 m distance d apart rotate about their common centre of mass Deduce an expression...
- Q from the 1 centre field and potent 6 5 In figure 6 105 particle A has a mass of 1 4 kg and particle B has a mass of 3...
- Q A uniform chain of mass m rests on the quarter part of the sphere smooth with help of idea string as shown in the figure The tension in the string...
- Q 6 71 A particle of mass 1 kg is placed at a distance of 4 m from the centre and on the axis of a uniform ring of mass 5...
- Q The Earth has a circular orbit of radius r and period t around the Sun Mars has a circular orbit of radius R and period T In order to send...
- Q In gravitational interaction gravitational field 1 3 dv and potential V are related as I If gravitational potential V verses distance variation is given by Then gravitational field and distance...
- Q the cavity passes through the centre of the sphere as shown in the figure A particle of mass mo is released from centre of cavity choose the correct statement Assume...
- Q D 31 Show that critical velocity of a satellite revolving close to the surface of the earth of radius R and mean density p is M 94 61 2R G...
- Q A horizontal overhead power line is at a height of 10 m from the ground and carries a current of 200A from east to west The magnetic field directly below...
- Q A space vehicle destined for Mars was launched into a 200 km circular parking orbit around Earth After coasting for a period of time during which system checks were performed...
- Q Suppose that a planet has a surface charge 34 density of electron m given radius of the planet is 8850 km then calculate potential of the planet due to this...
- Q A car is moving towards a high cliff The driver sounds a horn of frequency f The reflected sound heard by the driver has frequency 2 f If v is...
- Q A satellite of mass 19 0 kg in geosynchronous orbit at an altitude of 3 58 x 104 km above the Earth s surface remains above the same spot on...
- Q Question No 12 If the earth suddenly contracts to one third of its present size without any change in its mass what will be the ratio of the kinetic energies...
- Q 400 km from where Example 10 64 A satellite circled around the earth at a distance of 100 km Determine its orbital velocity if the radiu of the earth is...
- Q 3 The time period of a satellite of earth is 5 hours the separation between the earth and the satellit is increased to 4 times the previous value th new...
- Q Two bodies of respective masses m and M are placed d distance apart The gravitational potential V at the position where the gravitational field due to them is zero is...
- Q 6 If the the earth is at one fourth of its present distance from the sun the duration of year will be a half the present year 2020 b c...
- Q t of which ONE or MORE THAN ONE is are correct A spherical shell of volume mass density p thickness t and radius R R t is placed concentrically inside...
- Q 8 N number of similar objects of mass t are placed on the vertices of a regular polygon The length of each side of polygon is k If P be...
- Q Two bodies of masses m and m2 are initially at rest placed infinite distance apart They are then allowed to move towards each other under mutual gravitational attraction Their relative...
- Q ts At what distance from center of earth the gravitational field strength is 25 of that at the earth s surface given that the radius of earth is R O...
- Q Example 2 Sixth A space shuttle while travelling at a speed of 4000 km h with respect to the earth disconnects and ejects a module backward weighing one fifth of...
- Q 40 A particle of mass m is projected upwards with Ve 2 ve escape velocity At highest point velocity v the potential energy of the particle is GMm GMm a...
- Q radius at the entre the ween 54 A binary star system is revolving in a circular path with angular speed w and mass of the stars are m and 4m...
- Q 48 A system cosists of two stars of equal masses that revolve in a circular orbit about their centre of mass Orbital speed of each star is v and period...
- Q 41 Two particles each of mass mare revolving in circular orbits of radius r 5R in opposite directions with orbital speed vo They collide perfectly inelastically and fall to the...
- Q 37 A mass is taken from surface to a height h The change in potential energy in this process is equal to the change in potential energy if it is...
- Q 52 A solid sphere of mass M before cavity and radius R has a spherical cavity of radius R 2 such that the centre of cavity is at a distance...
- Q 18 An engine can pump 25 000 litres of water to a vertical height of 35 metres in 5 minutes Calculate the gravitational potential energy of water at a given...
- Q Eight point masses each of mass m are kept fixed at equal distance on a circle of radius R as shown Now if any one of them is taken very...
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