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After the collision the combined object swings on the end of the cord. When the block has risen a vertical height of 0.725 , the tension in the cord is 4.66 .What is the velocity of the bullet initi
The ramp is inclined at 32.5 ° with respect to the horizontal.The coefficient of kinetic friction between the log and the ramp is 0.872, and the log has an acceleration of 0.724 m/s2. Find the t
Constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.5 m/s in 2.24 s, what will be his total time?
A 200 , 45.0-cm-diameter turntable rotates on frictionless bearings at 63.0 rpm. A 19.0g block sits at the center of the turntable. A compressed spring shoots the block radically outward along a fr
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume th
A 78.0 kg boy and a 59.0 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl towards the boy is 2.27 m/s2, find the magnitude
In a spiral spring, your hand completes 3.75 back-and-forth cycles every 5.82 s. The velocity of the pulse in the spring is 1.25 cm/s. What is the wavelength?
How much time would it take for her to emit a net radiant energy from her body that is equal to the energy contained in this dessert?
17.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 81.6 N and is directed at an angle of 34 ° above the horizontal. Determine t
A ferry boat is sailing at 12 km 30 degrees West of N with respect to a river that is flowing at 6.0 km/h East. Find the speed of the boat when observed from the shore (magnitude and direction).
A 420 g ball swings in a vertical circle at the end of a 1.78-m-long string. When the ball is at the bottom of the circle, the tension in the string is 11 N. What is the speed of the ball at that p
Was moving at 4.1 m/s when he was tackled by an 85 kg cornerback running at 5.5 m/s in the same direction, what was their mutual speed immediately after the touchdown-saving tackle?
You're flying your 10,000-kg Scooty Puff Pro spaceship at a constant speed of 20 km/s in the positive x-direction. All of the sudden it malfunctions and the many of the thrusters are stuck on. The m
By how much is the spring stretched as the blocks are lowered? The spring exerts an upward force of F on the top block.
Calculate the lateral magnification of the Sun by the objective, according to the object distance and image distance. Try to find where the image of the Sun is located after the objective.
A capacitor when fully charged holds 5.0 J of energy. When it is connected across a 10-kΩ resistor, 2.0 J of energy is dissipated in 8.5 ms. What is the capacitance of the capacitor?
(a) Ignorning the effects of friction during the collision, find the velocity of the sled and the person as they move away. (b) The sled and person coast 30.0 m on level snow before coming to rest.
Bonnie and Clyde are sliding 430 {rm kg} bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 445 {rm N} of force while Bonnie pul
A pitcher throws a 0.5 kg ball of clay at a 6 kg block of wood. The clay sticks to the wood on impact, and their joint velocity afterward is 3 m/s. What was the original speed of the clay?
A cannonball launched with an initial velocity of 141 m/s at angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it
What is the frame rate of a 3 cycle pulse emitted from a 5 MHz transducer having a wavelength of .002m, and 200 lines of sight in a medium that takes 300ms for one pulse to return?
If she were to use the mattress as a trampoline-losing contact with it for part of each cycle-what minimum amplitude of oscillation does she require?
A 1400 {rm kg} wrecking ball hangs from a 16 {rm m}-long cable. The ball is pulled back until the cable makes an angle of 27.0^circle with the vertical. By how much has the gravitational potential e
An unknown force pushes a 17 kilogram block across a smooth (frictionless) floor. Three seconds after the force is first applied to the block, the block is moving with a speed of 6 meters per secon
The driver of a 1800 {kg} car traveling on a horizontal road at 100 kmh suddenly applies the brakes. Due to a slippery pavement, the friction of the road on the tires of the car, which is what slow