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A point charge = 5.00nC is located on the x-axis at = 2.00m , and a second point charge = -3.0nC is on the y-axis at = 1.00m . What is the total electric flux due to these two point charges through
What is the maximum speed of the disk without the block and penny sliding? The acceleration of gravity is 9.8 m/s2.
What is the coefficient of kinetic friction between the skier and the horizontal surface?
If 30 kcal of heat are supplied to 6 x 102 g of water at 21degrees C, what is the final temperature of the water?
A horizontal 797-N merry-go-round is a solid disk of radius 1.53 m, started from rest by a constant horizontal force of 50.4 N applied tangentially to the edge of the disk. Find the kinetic energy
Calculate the magnitude of the force between a gold nucleus and an electron in an orbit with radius 4.49 10-12 m around the nucleus. The gold nucleus has a charge of +79e.
A man weighing 710 and a woman weighing 430 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman?
Tarzan swings on a 33.0 m long vine initially inclined at an angle of 37.0° with the vertical. (a) What is his speed at the bottom of the swing if he starts from rest?
A 20kg floodlight in a park is supported at the end of a horizontal beam of negligible mass that is hinged to a pole. A cable at an angle of 30 degrees with the beam supports the light. Find the te
A pair of narrow, parallel slits separated by a distance of 0.291 mm are illuminated by the green component from a mercury vapor lamp of wavelength 546.5 nm. The interference pattern is observed on
A uniform plank of length 6.00 m and mass 30.0 kg rests horizontally across two horizontal bars of a scaffold. The bars are 4.50 m apart, and 1.50 m of the plank hangs over one side of the scaffold.
A 1050 kg car carrying four 78 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maxim
If a violin string transmits waves at 375 m/s and has 295 Hz as its fundamental frequency, what is the string's length?
A Carnot engine whose high-temperature reservoir is at 620 takes in 570 of heat at this temperature in each cycle and gives up 325 to the low-temperature reservoir. How much mechanical work does th
During a circus performance, a 71-kg human cannonball is shot out of an 17-m-long cannon. If the human cannonball spends 1.04 s in the cannon, determine the average net force exerted on him in the b
The temperature of the surface of a certain star is K. Most hydrogen atoms at the surface of the star are in the electronic ground state. What is the approximate fraction of the hydrogen atoms that
The electrons in a metal that produce electric currents behave approximately as molecules of an ideal gas. The mass of an electron is me = 9.109·10-31 kg. If the temperature of the metal is
If you looked at an incandescent light bulb and a neon sign through a diffraction grating, describe the differences you would observe in the spectra. Explain your reasoning.
A simple harmonic oscillator consists of a block of mass 4.80 kg attached to a spring of spring constant 60 N/m. When t = 4.00 s, the position and velocity of the block are x = 0.129 m and v = 3.41
When a 58-g tennis ball is served, it accelerates from rest to a speed of 47 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 38 cm. What is the magnitude of
A parallel beam of light from a He-Ne laser, with a wavelength of 652 nm, falls on two very narrow slits 0.050 mm apart. How far apart are the fringes in the center of the pattern on a screen 2.7 m
Six pendulums of mass m and length k as shown are released from rest at the same angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes throu
A 13.0 kg box slides 4.0 m down a frictionless ramp then collides with a spring whose spring constant is 160 N/m. What is the maximum compression of the spring?
The most rapid landscape solution occurs in ________ areas.