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An airplane starting from airport A flies 470 km east, then 317 km at 57.3 degrees west of north, and then 492 km north to arrive finally at airport B. The next day, another plane flies directly fro
satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 3.70 104 s. What is the speed at which the satellite travels?
A sled weighing 1.0 X 10^2 N is held in place on a frictionless 20.0 degree slope by a rope attached to a stake at the top. The rope is parallel to the slope. What is the normal force of the slope
When you take your 1300-kg car out for a spin, you go around a corner of radius 60.5 m with a speed of 15.2 m/s. The coefficient of static friction between the car and the road is 0.94. Assuming you
Suppose the speakers are reconnected so that the 489 sounds they emit are exactly out of phase. At what positions are the intensity maximum and minimum now?
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the minimum radius of the circular path? (b) At
A 320 kg wooden raft floats on a lake. When a 75 kg man stands on the raft, it sinks 3.5 cm deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of the vibr
A 1.00 V potential difference is maintained across a 7.0 resistor for a period of 20.0 s. What total charge passes through the wire in this time interval?
At one instant a bicyclist is 70 m due east of a park's flagpole, going due south with a speed of 15 m/s. Then, 19 s later, the cyclist is 65 m due north of the flagpole, going due east with a spee
A steel aircraft carrier is 385 m long when moving through the icy North Atlantic at a temperature of 1.65 °C. By how much does the carrier lengthen when it is traveling in the warm Mediterrane
A state highway patrol car radar unit uses a frequency of 9.00 x 10^9. what frequency difference will the unit detect from a car receding at a speed of 46.5 m/s from stationary patrol car?
A railroad flatcar is loaded with crates. The coefficient of static friction between the crates and the floor is 0.23. If the train is moving at 45.5 km/hr, in how short a distance can the train be
A heating element of resistance (at its operating temperature) 322 Ω is connected to a battery of emf 413 V and unknown internal resistance . It is found that heat energy is being generated i
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 4.90 m from the slits. If the bright interference fringes on the screen are separated by 1.56 cm, what is
What is the position vector of the particle at this time? What is the velocity of the particle when it reaches its maximum x coordinate?
A 27 pound meteorite struck a car, leaving a dent 21 cm deep in the trunk. If the meteorite struck the car with a speed of 500 m/s, what was the magnitude of its deceleration, assuming it to be con
Early test flights for the space shuttle used a "glider" (mass of 960 {rm kg} including pilot). After a horizontal launch at 460 {rm km/h} at a height of 3800 {rm m}, the glider eventually landed at
A rotating cylinder about 16 km long and 5.8 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it will experience the same acc
The sound level 23.3 m from a loudspeaker is 67.3 dB. What is the rate at which sound energy is produced by the loudspeaker, assuming it to be an isotropic source?
A ferry boat transports tourists among three islands. It sails from the first island to the second island, 4.76 km away, in a direction 37.0° north of east. It then sails from the second island
A submarine dives 90.0 m at an angle of 12.0° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Assume that upward and the direction of the
Find the frequency of the fourth harmonic if the string is fixed at one end and free at the other. (That is, if the free end is attached to a long string of negligible mass.)
A car traveling at 105 strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.85 . What was the magnitude of the average acceleration of the driver during
At the end of the firing period, the craft has velocity components of vx = 4430 m/s and vy = 3950 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle with
A metal block of mass m slides on a horizontal surface that has been lubricated with a heavy oil so that the block suffers a viscous resistance that varies as the 3/2 power of the spee F(v)=-cv^3/2.