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A load of bricks is being lifted by a crane at the steady velocity of Vo (= 5 m/s) when one brick falls of H (= 5m) above the ground. Describe the motion of the free brick by sketching x(t).
a. What is the greatest height above the ground that the brick reaches?
b. How long does it take to reach the ground?
c. What is its speed just before it hits the ground?
Two crates, of mass 75 kg and 105 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.00 kg crate.
The eyepiece of a microscope has a focal length of 1.25 cm and the objective lens focal length is 1.62 cm. what is the angular magnification of the microscope
two singly charged ions moving perpendicular to a uniform magnetic field B=0.4T each has a speed of 500 km/s, calculate the difference in masses of the two ions
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 4.60rad/s and? = 0.795rad/s3, Calculate the angular acceleration as a function of time
How fast (in ) must a centrifuge rotate if a particle 5.4 from the axis of rotation is to experience the acceleration of 300000 's.
a frictionless pulley which can be modeled as a 0.80 solid cylinder with a 0.30 m radius has a rope going over it. The tension in the rope is 10 N on the right side and 12 N on the left side. What is the angular acceleration of the pulley.
When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?
Two balls are approaching each other head-on. Their velocities are +14.6 and -8.88 m/s. Determine the velocity of the center of mass of the two balls
Styrofoam has a density of 300 kg/m^3. What is the maximum mass that can hang without sinking from a 40cm diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
What focal length objective lens is required for a 3 meter length telescope which uses a 4 Power eyepiece? Is the final image real
A toroidal solenoid has a mean radius of 18.00 cm and a cross-sectional area of 3.00 cm^2, What is the mutual inductance of these coils
Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, compute the specific heat for the substance.
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