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A mass of 10 kg is placed on a horizontal surface with friction with a coefficient of static friction of 0.81 and coefficient of kinetic friction of 0.33. A force of 34 Newtons is applied in the -y direction and a force of 5 Newtons is applied in the +y direction. Another force is applied in the +x direction (see sketch). The force applied in the +x direction is increased until it is 2 times the force needed to overcome static friction. If the mass is initially at rest, what is the magnitude of the object's final velocity, in m/s, after it has moved 7 meters in the +x direction after the forces are applied?
You are given 16 light bulbs and a battery with a voltage of 12 Volt. Each light bulb can have a max. Potential difference of 2 Volt across it without burning out. Find the voltage on each
Jane is standing on the platform waiting for the train. The train approaching the platform from the north at 20 m/s blows its whistle when it is 100 m away from Jane. What frequency of sound does Jane hear
A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.28. Its velocity at point A is 8.0 m/s and at point B is 4.8 m/s. Use the impulse-momentum theorem to find how long the sled takes to travel from A to B.
A 1100 kg cannon, which fires a 50 kg shell witha speed of 506 m/s relative to the muzzle, is set at anelevation angle of 39° above the horizontal. At what angle with the ground is the shell projected
An archer shoots an arrow with initially only a horizontal velocity from his bow. find by how much will the arrow miss if the archer stands 50 m from the target
A viewing window in the Atlanta aquarium is 67 inches wide and 43 inches high. what is the outward force on the window
A contestant in a winter games event pushes a 35.0 kg block of ice across a frozen lake, Calculate the minimum force F he must exert to get the block moving
A simple electric motor consists of a150 turn coil 3.0 centimeter in diameter, mounted between the poles of a magnet that produces a 0.24 T field. Find the maximum torque developed by the motor
A drop of water on a countertop reflects light from a flower held 3.10cm directly above it. The flower's diameter is1.80cm and the diameter of the flower's image is 0.117cm. What is the focal length of the water drop, assuming that it might be treate..
you throw a ball upward with an initial speed of 4.6 rm ms. when it returns to your hand 0.94 rm s later it has the
a hard drive is turned on from rest and accelerates to 5100rpm rpm in 5.14 s. The drive then maintains this rate of rotation for 164s at which point it is turned off and slows to a stop.
Calculate the angle for the third-order maximum of 590 nm wavelength yellow light falling on double slits separated by 0.105 mm. It relativistic effects are to be less than 5%, then y must be less than 1.05. At what relative velocity is y= 1.05?
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