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Q1. A 130 block on a frictionless table is firmly attached to one end of a spring with = 40. The other end of the spring is anchored to the wall. A 21 ball is thrown horizontally toward the block with a speed of 6.6.
Q2. A man can exert a force of 600 N on a rope attached to a sled. The rope is at an angle of 40?With the horizontal. if the coefficient of kinetic friction between the sled and ground is 0.5,what is the maximum load on the sled that man can pull at stable speed?
One mole of nickel (6E23 atoms) has a mass of 54 grams, and its density is 8.9 grams per cubic centimeter. You have a long thin bar of nickel, 2.0 m long, with a square cross section, 0.12 cm on the side.
Steam at 100 degrees C is added to ice at 0 degrees C. Find the amount of ice melted and the final temperature when the mass of steam is 13 g and the mass of ice is 48 g
A 12 kg object oscillates at the end of a vertical spring that has a spring constant of 1.70 x10^4 N/m. The effect of air resistance is represented by the damping coefficient b = 3N•s/m. Find the time interval that elapses while the energy of the ..
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
An iron tower in is 340 meters tall on a cold day (=-8l4 degrees Celsius). What is the hight of the tower on a hot day whe the tempeture is 32.4 degrees Celsius
question1two speakers one directly behind other are each generating a 268-hz sound wave. what is the least separation
A river ?ows at a speed vr = 5.85 km/hr with respect to the shoreline. A boat needs to go perpendicular to the shoreline to reach a pier on the river's other side, determine the width of the river
The arm in the figure below weighs 43.7 N. The force of gravity acting on the arm acts through point A. Determine the magnitude of the tension force Ft in the deltoid muscle
The semiconducting compound CdTe is widely used for infrared light emmiting diodes (LEDs). find the frequency of light emitted by a CdTe LED
A sheet of glass (n = 1.50) is coated with a 500 nm thick layer of cubic zirconia (n = 2.18). How many phase changes do the reflected rays undergo
You have a wire of length L = 1.9 m for making a square coil of a dc motor. The current in the coil is I = 1.6 A, Find the maximum torque exerted on the coil
When Apollo 11 landed on the moon, the time delay for Neil Armstrong's voice to travel from the moon to Earth would be equivalent to the delay from hearing a speaker 439.5 m away. how far away is the moon
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