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A hypodermic needle consists of a plunger of circular cross-section that slides inside a hollow cylindrical syringe. When the plunger is pushed, the contents of the syringe are forced through a hollow needle (also of circular cross-section). If a 4.0-N force is applied to the plunger and the diameters of the plunger and the needle are 1.2 cm and 2.5 mm, respectively, what force is needed to prevent fluid flow at the needle?
A very distant galaxy has an apparent bolometric magnitude of +23.5. Determine the measured flux of photons
Batman throws a bat grenade at an angle of 44 degrees to the horizontal with a speed of 17.80 meters per second. How far does it travel.
A freezer is used to freeze 2.0 L of water completely into ice. The water and the freezer remain at a constant temperature of T = 0 C, Determine the change in the entropy of the freezer
Starting from rest, a boat increases its speed to4.12 m/s with constant acceleration. What is the boat's average speed? If it takes the boat 4.62 s to reach this speed, how far has it traveled?
What is the magnitude of the external force essential to hold a 2 kg cart motionless at the top of a 2m high incline which is 30 degrees.
q1. the wire is made up of atoms with valence 2 and molecular mass 80 gmole where u 1.5605 times 10-27 kg is the mass
A motorcycle, which has an initial linear speed of 9.1 m/s, decelerates to a speed of 2.0 m/s in 4.5 s, calculate the angular displacement (in rad) of each wheel
If the orientation of the spacecraft is to be changed by 30.0°, for what time interval must the gyroscope be operated.
a wave on a string is described by dxt3.2cm sin2pix7.2cmt0.14s1 where x is in m and t is in s .a what is the wave
a rocket of mass 4.5 x 105 kg is in flight. its thrust is directed at an angle of 53.0deg above the horizontal and has
When catching a baseball, a catcher's glove moves by 12cm along the line of motion of the ball. If the baseball exerts a force of 477N on the glove, how much work is done by the ball.
question1which of the follow describes possible scenarios?a an object has zero instantaneous velocity and non-zero
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