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A tennis player hits a ball 1.8m above the ground. The ball leaves her racquet with a speed of 20.0m/s at an angle of 5? above the horizontal. The horizontal distance to the net is 7.0m, and the net is 1.0m high. (a) Does the ball clear the net? If so by how much? If not, by how much it miss? (b) What was the ball's speed when it clears the net? (c) Is the ball on its way up or on its way down?
What is the critical angle for light at the glass-liquid interface when the glass with n = 1.54 is immersed in water
An airplane is travelling horizontally with a speed of 50 m/s 500m above the ground. How long will the package take to strike the ground
A thin horizontal 10cm x 10cm copper plate which is 1 mm thick has 1010 excess electrons. If the electrons are uniformly distributed, what are the strength and direction of the electric field a) 0.1 mm above the top surface of the plate? b) in the ce..
Three, and only three, bright fringes can be seen on either side of the central maximum when a grating is illuminated with light ( = 430 nm)
When driving west toward the Rocky Mountains, you see a peak 2.8 degrees above the horizon. Your GPS gives your current elevation as 1500 m , and according to the map, you're 22.5 km (horizontally) from the peak. Find the peaks elevation.
two long parallel wires are separated by 2.5 mm. the current in one of the wires is twice the other current. if the
stiff wire bent into a semicircle of radius a is rotated at constant frequency f in a uniform magnetic field B, What is the amplitude of the emf
A music store has jazz, classical, country-western and rock music albums on tapes and CDs in the following quantities finding the probability.
Two long straight parallel wires are fixed . Point p is in between the wires. Point p is 0.5 maway from the wire with 1A and 1m away from the wire with 3A . The currents go in the same direction.
Consider simultaneously running 500 dissimilar function generator loudspeaker systems, each of which produces a pure sine wave sound of the same amplitude. Oscillator one produces a pure 20 Hz sine wave, oscillator two produces a pure 40 Hz sine wave..
A 2 meter length of steel changes length by 2.4 mm during the course of a day. what is the change in temperature of the steel
Two parallel wires are 13 centimeter apart. Each wire is 6 centimeter long. Calculate the force between the two wires
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