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At t=0 a ball is thrown upward from the ground. Two seconds later, the ball hits the ground. Assume g=10m/s2. What is the maximum height of the ball. What is the initial velocity of the ball?
A cylinder is rolling along the ground without the slipping at 7m/s. It comes to a hill and begins going up. Assume no losses to friction, how high vertically would it go before it stops?
Design a circuit in which the output voltage leads the input voltage by 30° and the current by 90°. The input voltage is a cosine wave with an angular frequency of ?. You must show (1) the phasor diagram (2) the circuit (3) the relationship betwee..
By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows, with m1 = 11.7 kg and m2 = 43.9 kg. find the mass of the pulley
An L-R-C series circuit has C=4.80*10^-6F, L= 0.500H, and source voltage amplitude V= 54.5V. The source is operated at the resonance frequency of the circuit. If the voltage across the capacitor has amplitude 77.5V, what is the value of R for the res..
For two concentric conducting rings the inner of the large ring in 12 cm and the outer radius of the smaller ring is 4 cm, Calculate the electric potential half way between the two rings 8 cm away from the center of the rings
An airplane flies from city A and arrives at city B which is located 600 km North of city A it flies the first 300km/h, find the Average velocity of the plane
A flight attendant pulls her 65N flight bag a distance of 388m along a level airport floor at a constant velocity. The force she exerts is 38 N at an angle of 51° above horizontal.
A car with mass 1000kg traveling east at 25 (m/s) runs straight into a truck with mass 1500kg traveling west at 10 (m/s). How far do the vehicles slide
A beam of light is emitted in a pool of water from a depth of 64.0 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit the water?
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground s..
a kangaroo jumps at an angle of 80deg above the horizontal with a velocity of 15 ms. if the mass of the kangaroo is 75
A box of 25cm by 25cm by 25cm is placed in water, when a rat is placed on top of the box the box goes down by 2cm. what is the weight of the rat
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