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A 14 N horizontal force pushes a block weighing 3.0 N against a vertical wall (see the figure). The coefficient of static friction between the wall and the block is 0.62, and the coefficient of kinetic friction is 0.45. Assume that the block is not moving initially. In unit-vector notation , what is the force on the block from the wall?
A lightbulb has a resistance of 170 ? when operating with a potential difference of 110 V across it. What is the current in the lightbulb
A spherically spreading EM wave comes from a 1200 W source. What is the rms value of the electric field
A 8.80-g bullet has a speed of 1.17 km/s. What is the bullet's kinetic energy if its speed is halved
A 55kg pole vaulter running at 10m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.10m/s and air resistance is disregarded, how high was jump.
A 6.0 ?F capacitor is connected in series with a 4.0 ?F capacitor and a potential difference of 200 V is applied across the pair. What is the potential difference across the 6.0 ?F capacitor
A rock weighing 8528 N rock with a volume of 24 L is completely submerged in mercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
A mass system with a spring constant of 66.0 N/m undergoes simple harmonic motion with a period of 0.628 s. what is the total energy of the oscillation
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
An object with a charge of 4.6 MicroC moves from moves from the top to the bottom of this page at a speed of 16.6 m/s. What is the direction of this magnetic field force
Calculate the torque on the center of mass of the rod alone with respect to the pivot point.(in N*m)? Calculate the unknown mass.(in kg).
The seed has a mass of 250 mg., a functional lift-to-drag ratio of 4.0, a lift coefficient under the same conditions of 0.3, and a wing area of 5000 mm2. How long will it take to hit the ground
Light of wavelength 560 nm illuminates a single 0.77 mm wide slit. At what distance from the slit should a screen be placed, What is the width of the central maximum
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