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The overhead view shown in the diagram is approximately to scale. The arrow represents the average force your toe applies briefly to the block of ice. What is the unit vector in the direction of the
An osprey's call is a distinct whistle at 2200 Hz. An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2300 Hz . How fast is the osprey approaching?
A 2400-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6.67 × 103 m/s. The radius of the circular orbit is 8.92 × 106 m. Determine the
A 50.0-g copper calorimeter contains 250g of water at 20 degrees C. How much steam must be condensed into the water if the final temperature of the system is to reach 50 degrees C.
A 27.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley. Calculate the mass of sand added to the bucket.
Determine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes. (Remember, a converging lens has a positive focal length and a diverging lens has a negative focal le
An AA battery is connected to a parallel-plate capacitor having 4.50 cm diameter plates spaced 4.73 mm apart. How much charge (in C) does the battery supply to each plate.
Find the minimum magnetic field needed for zeeman effect to be observed in a spectral line of 400 nm wavelength when a spectrometer whose resolution is 0.010 nm is used?
A satellite is in a circular orbit about the earth (ME = 5.98 × 1024 kg). The period of the satellite is 1.20 × 104 s. What is the speed at which the satellite travels?
The 100 kg block takes 8.0 s to reach the floor after being released from rest. What is the mass of the block on the left?
After being struck by the stone, the boat's velocity is 1.9 m/s, due east. What is the mass of the boat? Assume the water offers no resistance to the boat's motion.
The slits and the screen. The tenth interference minimum is observed 7.44 mm from the central maximum. Determine the spacing of the slits.
The block is released and follows the trajectory shown, falling .80 m vertically and striking a target on the floor that is a horizontal distance of 1.2 m from the edge of the table. Air resistance
A parallel-plate capacitor has square plates of side 8.0 cm separated by 0.80 mm. If you charge this capacitor to 15 V, what is the amount of charge transferred from one plate to the other ?
Assuming an elastic collision and ignoring friction and rotational motion, find the y component of the struck balls velocity.
Fred strikes a steel (γ = 20x1010 and ρ = 7.8x103 kg/m3) train rail with a hammer at a frequency of 2.50Hz and Wilma puts her ear to the rail 1.0 km away.
Find the grindstone's angular acceleration in rad/s2. Find the coefficient of friction between the ax and the grindstone.
Construct a ray diagram to scale showing the object, image and the mirror. Determine graphically the characteristics of the image.
A daredevil is shot out of a cannon at 45 degrees to the horizontal with an initial seed of 25m/s. A net is positioned at a horizontal distance of of 50 m from the cannon from which it is shot. At w
Two children ride on the merry-go-round. Child 1 is 2.0 {rm m} from the axis of rotation, and child 2 is 1.5 {rm m} from the axis. If the merry-go-round completes one revolution every 5.2 s, find th
A 55-kg swimmer is standing on a stationary 210-kg raft. The swimmer then runs off the raft horizontally with a velocity of +4.6 m/s relative to the shore. Find the recoil velocity that the raft wou
Find the electric potential required to match the double slit interference pattern using a 670 nm laser (using de Broglie's equations).
After the collision (assumed elastic), the second ball is moving along the positive y axis. What is the final direction of the first ball, and what are their two speeds?
An 126 g ball is dropped from a height of 58.1 cm above a spring of negligible mass. the ball compresses the srping to a maximum dosplacement of 4.85169 cm. the accelelration of gravity is 9.8m/s^2.
A particle moves in a circle in such a way that the x- and y-coordinates of its motion are given in meters as functions of time t in seconds by what is the period of revolution of the particle?