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Q1. Two 53 {rm g} blocks are held 30 {rm cm} above a table. One of them is just touching a 50-long spring. The blocks are released at the same time. The block on the left hits the table at accurately the same instant as the block on the right first comes to an instantaneous rest.What is the k constant?
Q2. You swing a 2.70 kg stone in the circle, using the full length of a thin 77.0 cm rope. At what speed must you swing it so its acceleration would be 9.8 {rm m/s^2}?
Q3. Modern electroplaters can cover a surface area of 150 m2 with one troy ounce of gold (volume = 1.811 cm3). What is the thickness of electroplated gold?
It runs out of fuel at the end of the 4.97 s but does not stop. Explain how high does it rise above the ground?
A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..
A thermos contains 159 cm3 of coffee at 93.7 °C. To cool the coffee, you drop two 13.2-g ice cubes into the thermos. What is the final temperature of the coffee
ocean waves with wavelength 1.2 m and period 1.5s are moving past a pier. a boy runs along the pier, in the direction opposite to the motion of the wave, at 3.5 m/s. how many wave crests pass the boy each second?
q1. assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two
A ladder 6.10 m long leans against the side of a building. If the ladder is inclined at an angle of 76° to the horizontal, what is the horizontal distance from the bottom of ladder to the building.
question1sarah age 55 is experiencing some hot flashes of menopause and wants to mange her symptoms without taking
A rectangle has an area of 33.66 cm2. When both the length and width of the rectangle are increased by 1.30 cm, find the length of the shorter of the two sides of the initial rectangle
A boy kicks a football with an initial velocity of 28.0 m/s at an angle of 30.0 degrees above the horizontal. What is the highest elevation reached by the football
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
A 64-kg skier is going down a slope oriented 36° above the horizontal. Determine the pressure that each ski exerts on the snow
A proton is captured by an oxygen-16 atom which in turns emits a deuteron. find the mass number of the product isotope
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