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Q. While the dried up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.4 m/s at an angle of 60° above the horizontal.
a. If the seed pod is 1.2 m above the ground, how long does it take for the seed to land? (Avoid air resistance.)
b. What horizontal distance does it cover throughout its flight?
Two narrow slits 50 micrometers apart are illuminated with light of wavelength 500 nm . What is an angle of the m=2 bright fringe in radians? in degrees.
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest at. It then oscillates with a period of 1.5 and the maximum speed of 32.
An proton (m = 1.67 ´ 10-27 kg and q = 1.6 ´ 10-19 C) travelling at 2.7 × 105 ms-1 enters a magnetic field of 1.2 T at right angles to the direction of motion of the electron. What is the centripetal force on proton.
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30. At 10.0 after blastoff, the engines suddenly fail, which means that force they produce instantly stops.
On a workday the average decibel level of a busy street is 65 kb, with 121 cars passing a given point every minute. If the number of cars is reduced to 33 cars every minute on a weekend, what is the decibel level of the street.
A conducting rectangular loop of mass M, resistance R, and dimensions w by l falls from rest into a magnetic field. All through the time interval before the top edge of the loop reaches the field, the loop approaches a terminal speed vT.
A 60.0 resistor is connected in parallel with a 116 resistor. This parallel group is connected in series with a 20.0 resistor. The total combination is connected across a 15.0 V battery.
An electric field of intensity 2.5 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.70 m long if the following conditions are true.
What is the work done by the tension in the cable.assume the roller coaster (h1 = 34 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach..
A hot (70 C) lump of metal has a mass of 250 gm and a specific heat of .25 cal/gm-C. John drops the metal into a 500 gm calorimeter (specific heat of .10 cal/gm-C) containing 75 g of water at 20 C. Once they reach equilibrium, what will be the fin..
A 6 kg block, starting from rest, slides down a frictionless incline of length 2 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block 0.5 vf.
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
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