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A) A spring has a spring stiffness constant k of 100N/m . How much must this spring be compressed to store 35.0J of potential energy?
B) A 69-kg trampoline artist jumps upward from the top of a platform with a vertical speed of 5.2m/s.
How fast is he going as he lands on the trampoline, 2m below?
If the trampoline behaves like a spring of spring constant 7.4x104N/m , how far does he depress it?
C)A ski starts from rest and slides down a 28?incline 55m long.
If the coefficient of friction is 0.090, what is the ski's speed at the base of the incline?
If the snow is level at the foot of the incline and has the same coefficient of friction, how far will the ski travel along the level? Use energy methods.
The uniform meterstick above has an object with mass 800 grams hanging at the 15cm mark and an object with mass 350 grams at the 70cm mark. It balances horizontally on a pivot placed at the 35cm mark. What is the mass of the meterstick?
A piece of Nichrome wire has a radius of 7.6 x 10-3 meter. calculate the necessary length of wire
A 2500 kg satellite is to be launched and put in orbit at 750km above the surface of the earth. What gravitational force will the satellite experience? How fast is the Satellite traveling in orbit?
There are two capacitors of capacitance 5.0uF and 8.0uF are connected in series. Find the equivalent capacitance of the network and the charge on each plate of the capacitors
What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods
A nuclear power plant has a maximum steam temperature (TH) of 280 degrees C. Then, if it is summertime TC is 40 degrees C, what is the summertime electric power output assuming nothing else changes
A 2.3kg wood block is pulled along a wood floor at a steady speed. What is the magnitude of the force pulling on the first block
A golf ball strikes a hard, smooth floor at an angle of 24.7 ° and, as the drawing shows, rebounds at the same angle. compute the magnitude of the impulse applied to the golf ball
Assume that water flowing through a pipe with a circular cross section flows most rapidly at the center of the pipe and least rapidly near the pipe walls. find the speed of the water at the center of the pipe
A drowsy cat spots a flowerpot that sails first up and thendown past an open window. How high above the window top did the flower pot go
A uniform block of height 0.330 m, floats in glycerin of density 1260 kg/m3. The bottom of the block is 0.2748 m below the surface of the glycerin. Illustrate what is the density of the block?
Social theory and various social work practice frameworks are in part a consequence of developments in the disciplines which have traditionally informed social work practice; philosophy, psychology, sociology and social work theorising. It is also..
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