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A 2.0 m pendulum is released from rest when the support string is at an angle of 25 degrees with the vertical.
A. What is the speed of the pendulum bob at the bottom of the string?
B. what is the speed of the pendulum bob when the support string makes an angle of 15 degrees with respect to the vertical on the other side?
A 79-kg person is exposed to 83 mrem of α particles (RBE = 12). How much energy (in joules) has this person absorbed
A glass fiber with a thermal expansion coefficient of 5x10^6 C^-1, an elastic modulus of 72 GPa, Calculate the maximum flaw size that this fiber can tolerate
A crate of mass m = 33 kg rides on the bed of a truck attached by a cord to the back of the cab, find the maximum acceleration the truck can have before the cord breaks
A uniform disk with a mass of 130 kg and a radius of 1.1 m rotates initially with an angular speed of 950 rev/min. How much work must this force do to stop the wheel
Two objects attract each other gravitationally with a force of 3.0×10-10 N when they are 0.60 m apart. Their total mass is 4.0 kg. Determine their individual masses.
At a certain time a particle had a speed of 84 m/s in the positive x direction, What was the average acceleration of the particle during this 2.7 s intervl
A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence 54.2 degrees. what is the index reflection of the glass
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.65 105 Pa and the pipe radius is 2.60 cm. Find the volume flow rate through the pipe
A 23.0 g block of copper whose temperature is 447 K is placed in an insulating box with a 92.4 g block of lead whose temperature is 132 K. find the equilibrium temperature of the two-block system
You drop a 14g ball from a height of 1.5 m and it only bounces back a height of 0.85m. What is the total impulse on the ball when it hit the floor
A blue puck with a mass of 3.60×10?2kg , sliding with a speed of 0.180m/s on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass m, Find the mass m of the red puck
q1. a rock is fixed to a 3m long spring. rock is revolving at 2 circles per sec. what is the frequency period angular
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