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A police officer is investigating the scene of an accident where two vans collided at an intersection. One car with a mass of 1100 kilogram moving west had collided with a 1300 kilogram van moving north. The two vans, stuck together, skid at an angle of 30 degree north of west for a distance of 17 meter. The coefficient of kinetic friction between the road and the tires is 0.80. The speed limit for each van was 70 km/h. Find was either van speeding?
The inside of the cylindrical can shown above has cross-sectional area 0.005 m^2 and length 0.15 m. The can is filled with an ideal gas and covered with the loose cap. The gas is heated to 363K and some is allowed to escape from the can so that re..
A concave mirror in an amusement park has a radius of curvature of 4.0 m. A child stands in front of the mirror so that she appears 2.5 times taller than her actual height. how far is she standing from the mirror
A violin string 30.00 cm long and fixed at both ends oscillates in its n = 1 mode. The speed of waves on the string is 280 m/s, What is the wavelength of the emitted sound wave
An ideal gas has a pressure of 2.0 atm and temperature 27 degrees celcius. what is the volume of this gas
An electron and a positron each have a mass of 9.11 x 10-31 kg. determine the energy of the electromagnetic radiation
Both drawings show the same square, each of which has a side oflength L = 0.88 m. An observer O is stationed at onecorner of each square. Two loudspeakers are located at corners ofthe square, as in either drawing 1 or drawing 2.
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
a 12 kg ball is dropped from rest at a point 5m above the floor and bounces back with a speed of 6 ms. what impulse is
A bullet is fired from a rifle that is held 1.69 m above the ground in a horizontal position. Calculate the time it takes for the bullet to strike the ground
In an amusement park water slide, people slide down an essentially frictionless tube. They drop 2.8 m and exit the slide, moving horizontally, What horizontal distance do they travel from the exit point
A particle starts from the origin at t = 0 with a velocity of8.0j m/s and moves in the xy plane with a constant acceleration of94.0i + 2.0j) m/s^2. What is the speed of the particle at this time
Two Stars of equal mass revolve in a circular orbit about a center of mass midway between them. Find the mass of each star
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