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Two objects have an elastic collision. Before the collision they approach one another with a velocity of 4m/s. With what velocity will they be separating after the collision?
After the collision, the 1200kg vehicle attains a velocity of 45m/s West while the 1100kg vehicle, 35m/s East. find the initial velocity of 1100 kg vehicle.
Yellow light strikes a diamond at a 46.0° angle of incidence and is refracted when it enters the diamond. Blue light strikes a piece of flint glass and has the same angle of refraction as does t
Compute the wavelength in air of ultrasound with a frequency of 44 kHz if the speed of sound is 344 m/s.
Two ropes in a vertical plane exert equal magnitude forces on a hanging weight but pull with an angle of 86.0 ^circ between them.
A boy shoots a BB gun horizontally at a target 14 m away. The gun is aimed directly at the center of the target, but the small metal BB hits 56 cm lower. Neglecting any air resistance, what was the
The solar corona is an extended atmosphere of hot 2*10^6 K gas surrounding the cooler visible surface of the Sun. The gas pressure in the solar corona is about 0.03Pa. What is the coronal density i
An unknown mass of silver is dropped into a bucket containing 3 kg of water. The silver is heated to 689 K before being immersed in the water, and the water is initially at 0 C. The system comes to
A door partially open, has its normal making an angle of 53 deg to the direction of the electric field. If the area of the door is 2 m2. What is the flux passing through the door?
Two narrow slits are 0.12 apart. Light of wavelength 550 illuminates the slits, causing an interference pattern on a screen 1.0 away. Light from each slit travels to the maximum on the right side of
What is his speed at the bottom of the swing if he starts with an initial speed of 3.44 m/s?
"Three equal point charges, each with charge 1.50 , are placed at the vertices of an equilateral triangle whose sides are of length 0.350 . What is the electric potential energy of the system? (Take
A man weighing 730 and a woman weighing 410 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman?
A 4.00-kg reel with a radius of 0.600 m and an axle (no friction), starts from rest and speeds up uniformly. What is the linear acceleration of the falling bucket?
The critical angle of refraction for calcite is 68.4° when it forms a boundary with water. Use this information to determine the speed of light in calcite.
A hotel elevator ascends 190 with a maximum speed of 5.6 . Its acceleration and deceleration both have a magnitude of 1.5 . How far does the elevator move while accelerating to full speed from rest?
A steel building is 119 m tall when the outside temperature is 0°C. How tall is the building on a hot summer day (29C)? The change in height is small, so express your answer with five decimal p
What are the various properties of a substance that determines its heat capcity?
The weight is released 8.2 m above the floor. Find the speed of the mass when it hits the ground by using the conservation of energy.
A boy riding on the back of the truck throws a can of soda upward and catches the projectile at the same location on the truck bed, but 16.0 m farther down the road. In the frame of refe
He keeps his legs straight as he falls, but at the moment his feet touch the ground his knees begin to bend, and, treated as a particle, he moves an additional 0.76 m before coming to rest. Treating
Take the coefficient of linear expansion for aluminum to be alpha = 2.40×10-5/rm{^{circ}C}.What is the temperature T of the Concorde's skin in flight?
The average coefficient of variation (10%) of the Monte Carlo calculations. What factors make the MIRD method more accurate than the ICRP method?
A relaxed biceps muscle requires a force of 25.0 N for an elongation of 3.0 cm; the same muscle under maximum tension requires a force of 500 N for the same elongation. Find Young's modulus for the
Hubble's constant is about 22 km/s/million light-years, implying an age of about 14 billion years for the universe. If Hubble's constant were 11 km/s/million light-years, the age of the universe wou