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A 17-kg 3.6-m ladder is leaning against a frictionless wall with its base making an angle of horizontal. What is the magnitude of the force exerted on the ladder by the wall?
A Venturi meter measures fluid speed in a pipe. A constriction (of cross-sectional area A2) is put in a pipe of normal cross-sectional area A1 (A1 = 2A2). Find the ratio of the flow speeds
An air track is tilted so that it makes a small angle with the horizontal. What is the magnitude of the acceleration for the air cart
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. It breaks into two pieces of equal mass after the explosion. One piece has a final velocity of 40 m/s along x. Find the velocity of t..
answer the following questionsa a magnetic field that varies in magnitude from point to point but has a constant
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha particle
A golf ball (mass = 46 g) is struck by a golf club (mass = 210 g). The club head's velocity, how fast is the ball moving after impact
Two point charges are located as shown in the figure, with charge q1 = +3.5 C at x = ?3.0 m, y = 0, How much work must be done on the electron to move it to the origin
Several bacteria are propelled by motors that spin hair-like flagella. A characteristic bacterial motor turning at a constant angular velocity has a radius of 1.9x10 -8 m, and a tangential speed at the rim of 2.9x10 -5 m/s. (
For the helium-neon laser, estimate the Doppler broadening of the output wavelength 632.8 nm at T = 243 K
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (5.50) i + (4.00 m/s) j, What is the magnitude of the cat's centripetal acceleration
At what temperature does a carbon resistor have a resistance of 995ohms, if it has a resistance of 1000 ohms at 20 degrees? What is its conductivity at the new temperature
A uniform electric field exists in the region between two oppositely charged parallel plates 1.58cm apart. Find the magnitude of the electric field
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