Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A 1.52 wide, 1.50 high, 1500 car hits a very slick patch of ice while going 21.0 .If friction is neglected, how long will it take until the car's speed drops to 14.0 ?
Then the bar is dropped. What is the terminal speed at which the bar falls? Assume the bar remains horizontal and in contact with the rods at all times.
A 39.0 kg child swings in a swing supported by two chains, each 2.91 m long. (a) If the tension in each chain at the lowest point is 356 N, find the child's speed at the lowest point.
on a hot day in Las Vegas, an oil trucker loaded 37000 liters of diesel fuel. he encountered cold weather conditions on the way to Payson, Utah when the temperature was 23 kelvin lower than in Las V
The tension is provided by a 44.5-N block that is hanging from the string. Determine the speed of the wave in part (a) and part (b) of the drawing.
A 29.0 g object moving to the right at 16.0 cm/s overtakes and collides elastically with a 7.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collisio
If the specifc heat capacity of tin is 230 J/kg times degrees celsuis, what is the final equilibruim temperature of the tin-water mixture?
The temperature of the rod is slowly increased. When the wax melts, the block slides out to the end of the rod. What is the final angular velocity? Give your answer in rpm.
A 2.8 kg bucket of water is raised from a well by a rope. the acceleration of gravity is 9.8 m/s/s. if the upward acceleration of the bucket is 5.2 m/s/s, find the force exerted by the rope on the b
A 2.0 2.0 parallel-plate capacitor has a 1.0 spacing. The electric field strength inside the capacitor is 1.1×105 . What is the potential difference across the capacitor?
A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly
A boy shoots a BB gun horizontally at a target 15 m away. The gun is aimed directly at the center of the target, but the small metal BB hits 56 cm lower. Neglecting any air resistance, what was the
A 240-N child is in a swing that is attached to ropes 1.90 m long. Find the gravitational potential energy associated with the child relative to her lowest position at the following times.
The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell?
One method of determining the refractive index of a transparent solid is to measure the critical angle when the solid is in air. If θc is found to be 41.3°, what is the index of refraction
Treat this problem as though the object and image lie along a straight line. Use ray tracing to decide whether a concave or convex mirror is needed, and to estimate the focal length.
Neglect the effects of air resistance and assume the ramp is frictionless. What is the maximum height h of his jump above the end of the ramp?
A major-league pitcher can throw a ball in excess of 43.0 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the poi
After the bullet collides and sticks in the wooden block that hangs on a string, the block swings out from its lowest position and reaches its highest position. What is conserved in the motion after
4.30×1023 nitrogen molecules collide with a 12.0 wall each second. Assume that the molecules all travel with a speed of 380 and strike the wall head on. What is the pressure on the wall?
what is the maximum emf induced in the loop? Assume that the plane of the antenna loop is perpendicular to the direction of the radiation's magnetic field
The figure shows two 2.5 kg blocks connected by a rope. The entire assembly is accelerated upward at 7.4 m/s2. Assume that the rope has negligible mass. What is the tension at the rope?
The turbine experiences a constant acceleration of .140 rad/s2. after making 2870 revolutions, its angular speed is 137 rad/s. what is the initial angular vleocity of the turbine?
Water flows over a section of Niagara Falls at the rate of 1.1 106 kg/s and falls 55.0 m. How much power is generated by the falling water?
What is the final speed of the crate if Jack jumps first and then a few seconds later Jill jumps in the same direction?