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A disk initially rotating at 120 rad/s is slowed down with a constant angular acceleration of magnetude 4 rad/s^2 a) how much does the disk take to stop? b) through what angle doe the disk rotate d
A hockey puck moving at 0.474 m/s collides elastically with another puck that was at rest. The pucks have equal mass. The first puck is deflected 35.8° to the right and moves off at 0.331 m/s.
An oscillator of 5 kg is attached to a spring with constant 2000 N/m and compressed a distance of 0.6m. What is the value of b that will cause the oscillator to be critically damped? What is the ti
An electric field with a magnitude of 152 N/C exists at a spot that is 0.18 m away from a charge. At a place that is 0.51 m away from this charge, what is the electric field strength?
Calculate the concentration of NH3(aq) necessary to initiate the precipitation of Zn(OH)2 from a 0.0010 M ZnSO4 solution. The Ksp for Zn(OH)2 is 1.8 x 10-14. The Kb for NH3 is 1.8 x 10-5.
A uniform electric field of magnitude 350 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.60 cm. What is the work done by the field
Calculate the maximum height x above the floor at which the person can push the lamp so that it slides rather than tips.
The skier's mass is 59.0 kg, and the coefficient of kinetic friction between the skis and the snow is 0.100. Find the magnitude of the force that the tow bar exerts on the skier.
25.0 mL of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 3.00. What was the
A charge of +3.2 10-5 C is located at a place where there is an electric field that points due east and has a magnitude of 17500 N/C. What are the magnitude and direction of the force acting on the
What is the magnitude and direction of the current in the smaller loop if the total magnetic field at the center of the system is zero?
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 × 107 mi2 in diameter, while the diameter of the 2002 hole was 6.9 ×
A student (m=63 kg) falls freely from rest and strikes the ground. during the collision with the ground, he comes to rest in a time of .101 s. The average force exerted on him by the ground is +1800
A small object rests on the bottoms of the cistern and at its center. how far from the right edge of the cistern can a girl whose eyes are 1.2 from the ground stand and still seee the object?
A 1M solution of Cu(NO3)2 is placed in a beaker with a strip of Cu metal. A 1 M solution of SnSO4 is placed in a second beaker with a strip of Sn metal. A salt bridge connects the two beakers, and w
A Federation starship ( 1.80×10^6 kg) uses its tractor beam to pull a shuttlecraft ( 2.10×10^4 kg) aboard from a distance of 15.0 km away. The tractor beam exerts a constant force of 4.0
A 200 block on a 54.0 -long string swings in a circle on a horizontal, frictionless table at 95.0. What is the speed of the block?
What is the volume of concentrated sulfuric acid needed to prepare a 500 mL solution of 2.0 N sulfuric acid (H 2SO 4).The information written on the concentrated sulfuric acid bottle are as fo
How far apart are two rocks on the moon that can be resolved by a telescope on the earth, whose diameter is 6 m, if the wavelength of the light is 540 nm?
A 135.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 30.0 deg with the horizontal. Find the magnitude of the applied force F.
What is the elastic potential energy of the drawn bow? The arrow has a mass of 0.0300 kg. How fast is it traveling when it leaves the bow?
There are two level or horizontal areas on the graph. what do these areas represent? At what two temperatures do you expect them to occur?
A traffic light is supported by two wires, which make an angle of 80.° to each other. If the maximum tension in each wire is 750 N, what is the maximum weight of the light they can support?
An organic compound had the following analysis: C=55.8% and H=7.03%. A 1.500g sample was vaporized collected over water and found to occupy 0.500L at 100C and 764 mmHg. (vapor pressure is at 100C is
A cannonball launched with an initial velocity of 141 m/s at and angle of 30° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it