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Which would encompass a high kinetic energy, an airplane traveling at the speed of sound or an airplane with half the weight of the first plane and traveling double the speed of sound? Describe answ
The second child consists of a mass of 15 kilograms. Find out how far from the fulcrum should the second child sit to precisely balance the torque?
You can swim across 100 meter wide river at a constant speed in 15 seconds if there is no current flowing. When there is a current of 3 m/sec flowing from your right to your left, i) Find out how lo
A uniform rod of 200 g pivoted at one end. The other end is joined to a horizontal spring. The spring is neither stretched nor compressed when the rod hangs straight down. What is the rod's oscillat
The bullet enters however doesn’t exit the block. Considering the perception of conservation of momentum, find out the velocity of the system consisting of the bullet and the block after the i
Assume two carts, one twice as massive as the other, fly separately if the compressed spring which attaches them is released. Find out how fast does the heavier cart roll compared to the lighter car
You lift up your rifle so that the barrel forms an angle of 45 degrees to the ground and pull the trigger. The bullet leaves the muzzled at a speed of 2,000 feet per second. Compute the maximum heig
i) Determine, how many feet will be needed to bring your car to a full stop? ii) Determine how long will it take to bring your car to a full stop?
The automobile weighing 5000 lb is capable to accelerate from 0 to 60 mph in 4 seconds. Determine how far has the vehicle traveled when it strike 30 mph?
A seagull drops a clam to the pavement from the height of 30 meters in an effort to break the shell. Find out how long will it take the shell to strike the pavement? Determine the velocity of the sh
A radiant heater of 1500 W is build to operate at 110 V. Determine how much thermal energy is generated in 1 hour by the heater? Deduce the answer in calories and joules.
The worker on the left weighs 275 N and the worker on the right weights 325 N. The scale measures the force on the tight rope at 425 N. Determine what would be the reading of a scale measuring the f
The uniform electric field having a magnitude of 125 000 N/C passes via a rectangle with sides of 2.50 m and 5.00 m. The angle among the electric field vector and the vector normal to the rectangula
The roller-coaster car is moving at 20 m/s all along a straight horizontal track. Determine what will be its speed after climbing a 15 m hill, when friction is ignored?
A convex lens having a 5 cm radius is employed to focus sunlight on a piece of paper to a spot 1 mm in diameter. When it takes 5 second for the paper to begin burning, then find out how much energy
The bat does 70.0 J of work on the ball in hitting it and applies a non-conservative force. Avoiding air resistance, find out the speed of the ball after the ball leaves the bat and is 25.0 m above
The person sees the ray as it skims just over the surface of the liquid. Find out how fast is the light traveling in the liquid? (x = 3.00 cm)
A student bends out of a window 50 feet above the ground beneath and drops from his left hand a 1 lb lead sphere and from his right hand a 10 lb lead sphere concurrently. i) Determine how long will
An arrow of 0.075 kg is fired horizontally. The bowstring applies an average force of 65 N on the arrow over a distance of 0.90 m. Determine with what speed does the arrow leave the bow?
When the circuit is tuned to radio station broadcasting at 990 kHz on the AM dial, then determine the capacitance of the capacitor?
A grandfather clock is powered by the descent of a 4.20 kg of weight. When the weight descends through a distance of 0.720 in 3.25 days, determine how much power does it deliver to the clock?
Determine the y-component of the magnetic field on the x-axis at x = 0. (Put answers in terms of k0 = mu0/4pi)
A 3.00 cm high pin, if placed at a certain distance in front of the concave mirror, generates an upright image 9.00 cm high, 30.0 cm from the mirror. Determine the position of the pin relative to th
When the object is 4.00cm high, find out the height of the image for the object distances of 5.00cm and 20.0cm?
The skier slides horizontally all along the snow for a distance of 21 m before coming to rest. The coefficient of kinetic friction among the skier and the snow is 0.050. Firstly, how fast was the sk