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Mechanics | Relativity
A bullet 10.1g leaves the barrel of a rifle with a speed of 504m/s. If the length of the barrel is 52.2cm determine the average force that accelerate the bullet.
Mechanics | Relativity
(a) 12.8 m, 150°;
(b) 3.30cm, 60.0°;
(c) 22.0 in., 215°.
Mechanics | Relativity
A 0.3 kg object is moving in a plane with x and y coordinates given by x=5t^3 -1 and y=3t^3 -2t^2 + 1, where x and y are in meters and t in seconds. Find the magnitude of the net force acting on the object at t = 2.00s
Mechanics | Relativity
at normal temperature and pressure 1cm cube sample of hydrogen and 1cm cube sample of oxygen is given. Find the ratio of of molecules containid in the sample of hydrogen to the number of oxygen
Mechanics | Relativity
A vector A has components Ax = 12.0 m and Ay= 5.00 m. What is the angle that vector A makes with the x-axis?
Mechanics | Relativity
An object A moving horizontally with a K.E of 800J experiences a constant horizontal opposing force of 100N while moving from the place x to another point y where xy=2m. What is the energy of A at y
Mechanics | Relativity
a bee flies to a flower 545 meters due north of its hive. the bee's speed in still air is 0.76 m/s, and there is a wind blowing toward the south at 0.24 m/s. How long will it take the bee to travel to the flower and back to the hive?
Mechanics | Relativity
Two riders initially at rest sit 5 m apart on a long, straight track, facing opposite directions. Starting at the same time, Rider A and B accelerates at 2.0 m/s2 and 3.0 m/s2, respectively. How far apart they will be at after 5.0 s?
Mechanics | Relativity
in a hydraulic pressure, a force of 20N is applied to a piston of area 0.2m^2, if the area of the other piston is 2m^2. calculate the force excerted on it.
Mechanics | Relativity
A car has an initial velocity of 30 m/s and an acceleration of -5 m/s2. Find its displacement when it comes to stop.
