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Police investigators, examining the scene of an accident involving two cars, measure 72 -long skid marks of one of the cars, which nearly came to a stop before colliding. The coefficient of kinetic friction between rubber and the pavement is about 0.70. Estimate the initial speed of the car assuming a level road.
How much kinetic energy is lost in the collision. compute the focal length of the mirror.
A coil consists of 212 turns of wire. Each turn is a square of side d = 18 cm, compute the magnitude of the induced emf in the coil
An object is 32cm in front of a converging lens with a focal length of 6.9cm, Use ray tracing to determine the location of the image
The activity of a radioactive source decreases by 5.2% in 28 hours. What is the half-life of this source
A 25 kg cannon shell is subjected to a constant acceleration of 1200 g while in the cannon barrel. What force is the burning propellant exerting on the shell
What is the electric potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)" Use = 8.85 10 12 for the permittivity of free space.
A 545-turn circular-loop coil with a diameter of 18.8 cm is initially aligned so that its plane is perpendicular to the Earth's magnetic field, What is the value of the Earth's magnetic field
The minimum stopping distance for a car traveling at a speed of 30 {m/s} is 60 {m}, including the distance traveled during the driver's reaction time of 0.50 {s}.What is the least stopping distance for the same car traveling at a speed of 41 {m/s}..
Consider two unknown point charges, Q1( on the left) and Q2 are separated by a distance, o.981m. Find the ratio Q2/Q1 in both magnitude and sign
Calculate the final equilibrium temperature assumning no heat loss after mixing occurs.
A ball is thrown straight upward in the air at a speed of 18.0 m/s, What is the maximum height the ball will reach
A parallel beam of light containing red (660 nm) and blue (470 nm) wavelengths goes from polystyrene to water, What is the angle between the two colors in water
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