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An object 0.480cm tall is placed 14.0cm to the left of the vertex of a concave spherical mirror having a radius of curvature of 21.0cm, Find the orientation (erect or inverted) and the nature (real o
Waves of frequency 198 Hz and amplitude 1.48 cm move along a 21.0 m string that has a mass of 0.046 kg and a tension of 48.0 N
A rope 3.4 m long has a mass of 0.85 kg. The tension in the rope is 51.0 N. What is the frequency of the power source if the power transmitted is 118 W
A dump truck, with a mass of 2030 kg, moves at a constant speed 2.23 m/s along a horizontal track. What is the truck's speed after the loading is completed
A harmonic wave on a string with mass per unit length 0.065 kg/m and a tension of 71.0 N has an amplitude of 6.9 cm. find the average power propagated along the string
When a spring cannon is horizontal, above the ground by 0.83m. by what factor would you expect the range to change
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
A 67.0kg skier is moving at 6.70m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How much internal energy was generated in crossing the rough patch
If the lithospheric plates move on average at 6 cm/yr, what would be a typical recycling time of terrestrial crust
The earth's magnetic field, with a magnetic dipole moment of 8.0×1022A?m2 , is generated by currents within the molten iron of the earth's outer core. What is the current in the current loop
A toy cannon uses a spring to project a 5.23 g soft rubber ball. The spring is originally compressed by 4.90 cm and has a force constant of 8.04 N/m. At what point does the ball have maximum speed
An olympic skier moving at 20.0 m/s down a 30.0 Degrees slope encounters a region of wet snow and slides 145 m before coming to a halt
You are designing the section of a roller coaster ride. Previous sections of the ride give the train a speed of 14.9 m/s at the top of the incline, find the minimum radius you can use for the vertic
Jonathan and Jane are sitting in a sleigh that is at rest on frictionless ice. Jonathan's weight is 850N, Jane's weight is 550N , Calculate the magnitude of the sleigh's horizontal velocity after th
A cannon ball is fired at a wall located 450 meters away. The initial horizontal component of the balls velocity is 90 m/s and it's initial angle is 24 degrees. How long does it take for the ball t
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
A light rope is attached to a block with mass 4.00 kg that rests on a frictionless horizontal surface. Find the mass m of the hanging block
A proton is released from rest at the positive plate of a parallel-plate capacitor. What will be the final speed of an electron released from rest at the negative plate
An insulating membrane separates conducting fluids inside and outside an unmyelinated axon, a type of nerve fiber. Find the surface area and capacitance of the axon
An Shot putter throw the shot from a height of 2m over the ground with the speed of 15m/s in the direction 36,9° upwards. What is the speed of the shot when it lands
A rope that is tied between a motor and a crate can pull the crate up a hill of ice (assume no friction) at constant velocity. Write the equations for the body in equilibrium
Traveling at a speed of 15.2 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. What is the speed of the automobile after 1.15s have elapsed
You throw a 20-N rock vertically into the air from ground level. You observe that when it is a height 14.5m above the ground, Use the work-energy theorem to find its maximum height
A 56.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.24 102 m/s from the top of a cliff 146 m above level ground, What is the initial total mechani
Four 3.5 kg spheres are located at the corners of a square of side 0.60 m. Calculate the magnitude and direction of the gravitational force