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A 1.35 kg object is moving in the x direction at 16.4 m/s. Just 3.61 s later, it is moving at 28.8 m/s at 36.0^circ to the x axis. What is the magnitude of force applied throughout this time.
A cylinderical water tank of radius 10ft and height 30ft is half filled with water. How much work is essential to pump all of the water out through a hole in the top of tank.
A cannonball launched with an initial velocity of 131 m/s at an angle of 40° follows a parabolic path and hits a balloon at the top of its trajectory.
An object has a kinetic energy of 313 J and the momentum of magnitude 24.1 kg·m/s. Find out the speed and the mass of the object.
assume the roller coaster (h1 = 37 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach point B? The distance traveled is 55.0 m.
The displacement of a particle moving under uniform acceleration is some function of elapsed time and acceleration. Suppose we write this displacement as: s=ka^mt^n where k is the dimensionless constant.
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. After an additional displacement, the plane is back where it started. Find the magnitude and the direction of the last leg of the journey.
A 2100 kg car traveling to the right at 32m/s is chasing a second car of the same mass that is traveling to the right at 10m/s.
Two point charges, Q_1 = -6.1 mu C and Q_2 = 2.0 mu C, are situated between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.30 m. suppose that the electric field produced by the charged plates is unifor..
The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert.
The work on a system with a mass 100 lbm is known to be 10 BTU's . If there is no change in potential energy and the speed changes from rest to 32 ft/sec. What is the change in the internal energy of the system?
The temperature of the air in a resonator is 15°C, when a tuning fork vibrates at one end, the spacing between tow successive resonances is found to be 50 cm. find the frequency of the tuning fork.
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