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Vector A has a magnitude of 11 and points in positive x direction. Vector B has magnitude of 22 and makes an angle of 35 with positive x-axis. What is the magnitude of A-B?
What is the distance and direction you would need to travel to return to the location of your first GPS reading if you jumped out of the car now?
A small 12.00 g plastic ball is suspended by a string in a uniform, horizontal electric field. If the ball is in equilibrium when the string makes a 30degrees angle with the vertical, what is the n
A ball is thrown horizontally from a 15 m high building with a speed of 9.0c/s.How far from the base of the building's does the ball hit the ground?.
Calculate average density of the earth in (a) kg/cm3 and (b) slugs/ft3, assuming our planet to be perfect sphere. Five billion years from now our sun will reduce in size.
Assume that friction and rotational motion are unimportant and that the collision is elastic. Also assume that all billiard balls have the same mass, m.
If the work function of the metal is φ = 1.8 eV, what is the maximum speed of an emitted electron? Note: the mass of an electron equals 9.11x10-31 kg.
Light with wavelength of λ = 456 nm is incident on a diffraction grating. The screen is placed at a distance L = 2m from the diffraction grating. The grating has N = 200/mm parallel slits (u
Looking at the three curves, one can infer some details about the motion of the car. For example, the curve representing the distance traveled x starts going up from the beginning until the car com
If t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car?
What is the net force on a bag pulled down by gravity with 18 newtons and pulled upward by a rope with 18 newtons?
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 35° from the edge of the building with an initial ve
The asteroid hast to be deflected so that by the time it reaches the star base, its center is 1800 m away from its original path. What is the minimum time before the asteroid's projected impact that
If the combined blob doesn't move just after the collision, what can you conclude about the relative speeds of the balls before they collided?
What are the image distance and the magnification when the object is placed at a distance s0 = 4.1 cm from the center of the mirror?
The two rails at a constant speed v = 3.90 m/s. Assume that resistance between the rod and rails is negligible. What is the rate of heat dissipation in the resistor?
Each plate of a parallel plate capacitor measures 12.0 cm by 18.0 cm. What is the electric field between the capacitor's plates?
An angle of 14.0 degrees relative to the horizontal and sustains a tension of 447 N. Find the magnitude and direction of the tension that the right section of the wire sustains.
While the wind exerts a force of 800 N due east and the water exerts a resistive force of 1200 N due east. What are the magnitude and direction of the boat's acceleration?
A 152 g sample of ice at -37oC is heated until it turns into liquid water at 0oC. Find the change in heat content of the system.
Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first splash and the second splash?
Two cylindrical steel rods A and B have radii of 0.02 m and 0.04 m, respectively. The two steel rods conduct the same amount of heat per unit time for the same temperature differences between their
If he hears the sound of the splash 3.00 seconds later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
Ten seconds after starting from rest, a car is moving at 40 m/s. What is the car's acceleration in meters per second per second?
StyrofoamTM cooler with 1" thick sides. How long will its contents remain at 0° C if the outside is asweltering 35° C? Assume no condensation forms on the outside of the cooler. Ignore the e