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A toaster rated at 1005 W operates on a 120 V household circuit and a 4.00 m length of Nichrome wire as its heating element. The operating temperature of this element is 328°C. What is the cross
A rifle bullet with a mass of 11.0 g traveling toward the right at 247 m/s strikes a large bag of sand and penetrates it to a depth of 24.5 cm. Determine the magnitude of the friction force (assumed
Inside the tube is a uniform electric field of 4.50 x 10-4 N/C pointing in the negative y-direction. How far does the particle travel before hitting the tube wall? Neglect any gravitational forces.
Assume that the block is not moving initially. In unit-vector notation (Fx i + Fy j), what is the force on the block from the wall?
A planet of mass 8 × 1024 kg is at location ‹ -4 × 10^11, 7 × 10^11, 0 › m. A star of mass 7 × 1030 kg is at location ‹ 5 × 10^11, -5 × 10^11
A player passes a 0.600- basketball downcourt for a fast break. How high above the release point is the ball when it is at its maximum height?
A 2000 kg car is slowed down uniformly from 19.0 m/s to 7.00 m/s in 4.00 s. How far did the car travel during that time?
A pulley system has an efficiency of 79.5 percent. How much of the rope must be pulled in if a force of 625 N is is needed to lfit a 75 kg desk 2.13 m ?
What is the name of teeth that do not grow out properly because there is too little space in the mouth.
Infrared lasers exist that can produce a nearly monochromatic (single-frequency) output with wavelength λ = 800 nm. Calculate the frequency of this laser output in Hz.
in a drawing the weight of the block on the table is 422 N adn taht of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration o
A meter stick, sitting on a frictionless table top, is struck by a wad of clay with a force, F = 4.0 N at an angle of as shown. The meter stick will rotate in the plane of the table. Determine the
Suddenly Tom begins to run toward the front of the boat at speed vrel = 3.04 m/s relative to the boat. Find the speed of the boat v, relative to Joe, while Tom is running.
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed v_final of the electron when it is 10.0 cm fr
The gunner, holding the machine gun in his hands, can exert an average force of magnitude F = 197 N against the gun. Find n, the maximum number of bullets he can fire per minute.
The second astronaut, mass M2 = 94.0 kg, then catches the ball. Find vrel, the speed one astronaut is moving relative to the other after one throw and one catch.
Find V, the speed of the block-and-bullet after the bullet comes to rest inside the block. Find ΔE, the amount of energy lost to the system due to friction between the block and the bullet.
In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 154 N/C downward at an altitude of 270 m and 174 N/C downward at an altitude of 420 m.
A 30 cm-tall, 4.0 cm-diameter cylindrical beaker is filled to its brim with water,What is the downward force of the water on the bottom of the beaker?
A quantity of gas in a piston cylinder has a volume of 0.515 m3 and a pressure of 200 Pa. The piston compresses the gas to 0.123 m3 in an isothermal (constant-temperature) process. What is the fina
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.1 m/s. Five seconds later, its speed is 6.80 m/s. What is its average acceleration?
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force must you exert to keep the pole motionless in a horizontal position.
As Tony the fisherman reels in a "big one" he turns the spool on his fishing reel at the rate of 3.8 complete revolutions every second. If the radius of the reel is 4.5 cm, what is the linear speed
Once the ball is caught, what is the change in velocity of the player? What is the magnitude of the final velocity of the two players?
Consider a too-small space station that consists of a 4.3 m radius rotating sphere. A man standing inside is 1.6 m tall and his feet are at 1 g. What is the acceleration of his head?