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Let's consider the effect of drag on the ball at the end of a string that I swung above my head as a lecture demonstration. The ball is 7 cm in diameter and has a mass of 8 g. The length of the string is 0.5 m and the tangential velocity of the ball is 5 m/s. We can consider the ball to be a smooth sphere. What is the tangential acceleration on the ball due to drag? What is the magnitude and direction of the net acceleration on the ball.
A 1.98 10-9 C charge has coordinates x = 0, y = ?2.00; a 2.73 10-9 C charge has coordinates x = 3.00, y = 0; and a -4.95 10-9 C charge has coordinates x = 3.00, y = 4.00, where all distances are in cm.
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 23cm apart. What is the wavelength of the sound
A 500-g particle is located at the point r=4m*i+3m*j-2m*k and is moving with velocity v=5m/s*i -2m/s*j+4m/s*k. What is the angular momentum of this particle about the origin
An electron is shot horizontally (x direction) with velocity of 2.2x10^5 m/s into a region with a uniform electric field of 10000.0N/C in the positive Y direction. What is its position(x and y) in 1.25 seconds?
A 1.86- sound wave travels through the pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as heart beats. The reflected sound is after that mixed with the transmi..
If a scuba diver descends also quickly into the sea, the internal pressure on all eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the dissimilarity between the exte..
A charge of +8.00uc is placed at each corner of a square 1.00 m long on each side. Draw a map of the electric field around this square. Decide the magnitude and direction of the forces on each charge.
It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed.
a glass rod that has been charged to 17.0nc touches a metal sphere. afterward the rods charge is 3.0nc . how many
A swimming pool has dimensions 36.0 m 8.0 m and a flat bottom. When the pool is filled to a depth of 1.90 m with fresh water, what is the force caused by the water on the bottom
Water flows from the bottom of a large tank where the pressure is 90 psia to a turbine which produces 30 hp. The turbine is located 90 ft below the bottom.
In an experiment of specific heat there are mixed 196 g of aluminum at 107°C with 52.3 g of water at 18.6 °C. Calculate the change in entropy of the system
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