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A horizontal spring that is lying on a frictionless table is attached at one end to a wall and at the other end to a box. The box is pushed so that the spring compresses by 9.00 cm, then it is released and undergoes simple harmonic motion with a frequency of 4.36 Hz. What is the box's speed when the spring is stretched by 0.0450 m from its original length?
The Earth produces an inwardly directed electric field of magnitude 150 V/m near its surface. (a) What is the potential of the Earth's surface relative to V = 0 at r = ∞? (b) If the potential of the Earth is chosen to be zero, what is the potential a..
A tug of war is held between two teams of five men each. The mass of each man is 80 kg and he can initially pull on therope with a force of 1000 newtons. find the position of the teams as function of time
Calculate the terminal velocity for a pollen grain falling through the air using the drag force equation. Assume the pollen grain has a diameter of 2 µm and a density of 0.4 g/cm3
A 12.69 g ice cube at -6.33 oC is place in an aluminum cup whose initial temperature is 135.39 oC. What is the mass in grams of the cup
A Galilean design telescope is to be made with an objective of focal length 450 mm with an angular magnification of 18. What should the focal length of the eyepiece be
Suppose unpolarized light of intensity 244 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 36.0°. What is the light intensity reaching the photocell
A straight wire carries a current of 10 A at an angle of 30o with respect to the direction of a uniform 0.30-T magnetic field. Find the magnitude of the magnetic force on a 0.50-m length of the wire.
A 2.2 kg wood block hangs from the bottom of a 1.2 kg , 1.0-m-long rod. The block and rod form a pendulum that swings on a frictionless pivot at the top end of the rod. A 11g bullet is fired into the block, where it sticks, causing the pendulum to..
A gun fires a bullet vertically into a 1.40-kg block of wood at rest on a thin horizontal sheet. how high will the block rise into the air after the bullet becomes embedded in it
A 0.80kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.1m on a frictionless horizontal surface. what is the maximum speed the ball can have
A 120 Volt to 220 Volt step-up transformer consumes 10 Amp current in the primary coil, which has 600 turns. Determine the power of the transformer
At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten..
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