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A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 14 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.4 s after launch.
An oil rig in the gulf is held at its designated drilling location by 3 tugboats. tugboat A oulls with 42000 N straight in the east direction. Tugboat B pulls at an angle of 50 degrees north of west. tugboat C pulls 25 degress west of south. draw ..
A student could either pull or push, at an angle of 30â?? from the horizontal, a 45kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
Two forces, F1=(-3.0i-4.45j)N and F2=(-2.75-5.50j)N, act on a particle of mass 1.50kg that is initially at rest at coordinates (-2.05m,3.75m). what are the components of the particles veloctiy at t=10 seconds
A mass M1 = 5 kg sits on a table top connected by an ideal rope and pulley with a hanging mass M2 = 1 kg. The coefficient of kinetic friction between the table and M1 is 0.15, and the coefficient of static friction is 0.25. What is the acceleration o..
a concave mirror used by a person who is shaving or applying makeup creates a virtual image of the face that is 1.60
Diffracted light from a circular aperture is viewed on a distant viewing screen, Find the radius of the aperture if the wavelength of light is 680 nm
A puck of mass 0.1 kg slides in a circular path on a horizontal frictionless table at an angular velocity ? of 20 rad/s. What happens to the angular velocity of rotation
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
question1assume that an ideal frictionless inclined plane has an angle of inclination of 5.00deg with respect to the
A parallel plate capacitor has a potential difference of 1.6V, a plate separation of 2.5mm, What is the magnitude of the electric field within the plates
A 0.07 kg bullet traveling at 569 m/s hits a 5.9 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
A +44 nC charge is placed on the z- axis at (0,0,5 cm). A grounded conducting plane fills the x-y plane where z=0. A) Find the surface charge charge density on the conducting plane at the origin.
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