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Question1
An object of mass 1.2 kg is released from rest at the top of a 5 metre plank inclined at 40 degrees to horizontal. Find out the normal reaction of the plane on the object and calculate the time taken for the object to reach the bottom of the plank and also its velocity at that time, (suppose that there are no frictional forces acting).
Question2
A new planet has an average radius 11.4 times that of the earth and a mass 311 times that of the earth. Determine the new planets mass density to earth mass density.
If the ultimate shear strength of steel is taken to be 2.50x 10^9 Pa, what force is required to punch through a steel plate 2.2cm thick? Assume the superhero's fist has cross-sectional area of 8.00x 10^1 cm2 and is approximately circular.
A uniform plate of height 1.920 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y = 1.000 x2. The plate has a mass of 1.17 kg.
An airplane is making a turn with a given radius in a circle. The lift force (given) is exerted perpendicular to the wings. What is the angle that the wings make with the horizontal
A cannon located 42 m from the base of a vertical 30 m high cliff has its muzzle pointing towards the cliff at an angle 48° above the horizontal. determine how far the shell lands past the edge of the cliff
A monochromatic light i incident on a single slit of width of 0.1 mm, and a diffraction pattern is formed at a screen which is 0.7 m away from the slit. The second order bright fringe is at a distance 2 mm from the center of the central maximum.
an electric on a airplane operates 20.8 volts a draws a current of 14.7amps. How much energy in joules does the motor use
A resistance of ohms ,an inductive reactance of 8 ohms and capacitive reactance of 15 ohms are connected in parallel across 120V, Find total current , power factor
The focal length of a lens is inversely proportional to the quantity (n ? 1), where n is the index of refraction of the lens material. The value of n, however, depends on the wavelength of the light that passes through the lens. where will the vi..
A container of groceries has a mass of 15.0 kg. if its coefficent of static friction is 0.20 what force is needed to start the container to move
A parallel plate vacuum capacitor is connected to a battery and charged until the stored electric energy is u, Find u, the energy dissipated in the resistor
When the crate is moving, the frictional force between the floor and the crate has a magnitude of 122.0 N. If the crate starts from rest, explain how fast will it be moving after the man has pulled it a distance of 2.30 m?
find out where the coyote lands in the canyon.
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