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A car moves horizontally with a constant acceleration of 3 m/s2. A ball is suspended from the ceiling of the car by a string. The ball does not swing being at rest with respect to the car. Compute what angle does the string make with vertical?
Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.
The membrane that surrounds a certain type of living cell has a surface area of 7.4 x 10-9 m2 and a thickness of 1.1 x 10-8 m. how many such ions are present on the outer surface
A narrow flat coil wound on a square frame has 120 turns and sides of 21.5 cm. What is the maximum torque that can be exerted by the field on the coil
shows a particle with positive charge q = 1.60 x 10-19 C is moving with speed v = 8.43 x 104 m/s toward a long straight wire with current i = 371 mA. find the magnitude of the force on the particle due to the current
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.21 kg, what is the velocity of the ball after the collision
A 69.00 kg skier is going down a slope oriented 33° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground. what must be the diameter of the aperture of the camera
What is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 4.09m and an eyepiece whose focal length is 3.29cm
A ray of light makes an angle of 25 degrees with the normal to a plane mirror. through what angle is the reflected ray rotated
A block of mass, m1 is 5 kg. It is lying on a frictional horizontal surface. Evaluate the magnitude of the net force on the hanging block
Assuming that the total retarding force on the diver is constant at 55.0 N with the parachute closed and constant at 3600 N with the parachute open, what is speed of the diver while he lands on the ground.
Equal masses of 0 oC ice and 100 oC steam are mixed together to form water. What is the final temperature of the water
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