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A cylindrical glass of water (H2O) has a radius of 4.43 cm and a height of 12.5 cm. The density of water is 1.00 g/cm3. How many moles of water molecules are contained in the glass?
Three charges, q1, q2, and q3, are located at the corners of an equilateral triangle with side length of 1.55 m. Find the work done in each of the following cases:
A cart carrying a vertical missile launcher moves horizontally at a constant velocity of 30.0 to the right. It launches a rocket vertically upward. The missile has an initial vertical velocity of 4
Ignoring air resistance and assuming that the average angular speed of the baton is 2.00 rev/s, determine the height to which the center of the baton travels above the point of release.
Suppose that an event occurs in inertial frame S with coordinates x = 75 m, y = 18 m, z = 6.0 m at t = 2.0 10-5 s. The inertial frame S ' moves in the +x direction with v = 0.76c. The origins of S
The distances from the Sun at perihelion and aphelion for Mars are 2050·105 km and 2490·105 km, respectively. What is the ratio of Mars' orbital speed around the Sun at perihelion to
What is the potential difference across one wire of a 50 m extension cord made of 16 gauge copper wire carrying a current of 4 A
A barefoot field-goal kicker imparts a speed of 40 m/s to a football initially at rest. If the football has a mass of 0.43 kg and the time of contact with the ball is 0.029 s, what is the force exe
What is the electromagnetic flux coming from the surface of a 3000K blackbody(show work)
Drawing on Eratoshthenes' method, if two observers are due north and south of each other and are seperated by 400 km, what is the circumference of their spherical world if they see the same star on
A dog pulls on a pillow with a force of 7.4 N at an angle of 33.7? above the horizontal a) What is the x component of this force?
You need to construct a 400 pF capacitor for a science project. You plan to cut two L times L metal squares and place spacers between them. The thinnest spacers you have are 0.30 mm thick.What is th
A 61 kg astronaut floating at rest in space outside a space capsule throws his 0.50 kg hammer such that it moves with a speed of 13 m/s relative to the capsule. What happens to the astronaut?
You're driving down the highway late one night at 15 {rm m}/{rm s} when a deer steps onto the road 42 {rm m} in front of you. Your reaction time before stepping on the brakes is 0.50 {rm s}, and th
A gas is compressed from 4.5×10-2 m3 to 2.6×10-2 m3 at a constant pressure of 1.7×105 Pa. (a) What is the work associated with the process? Make sure to include the correct sign. (
a ferry boat is 4.0 m wide and 6.0 m long. when a truck pulls onto it, the boat sinks 4.0 cm in he water. what is the weight of the truck?
A projectile is fired horizontally from a gun that is 38.0 m above flat ground, emerging from the gun with a speed of 390 m/s. (a) How long does the projectile remain in the air?
a meter stick with a mass of 89.5 g is being supported at the 50.0 cm mark with a pivot that is 1.00 cm above the center of mass of the meter stick. The moment of inertia of the stick about that poi
The space between the plates is then filled with a dielectric material, with dielectric constant K= 5.07. What must the magnitude of the charge on each capacitor plate now be, to produce the same po
A 0.135-kg ball, moving in the positive direction at 14 m/s, is acted on by the impulse shown in the graph below. What is the ball's speed at 4.0 s?
A 61-kg skier is going down a slope oriented 32° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
Find the potential difference V1 - V2. Point 1 is at the center of the plastic sphere, and point 2 is just outside the sphere.
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg·m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and
A dry cell does 7.5. J of work through chemical energy transfer 5.00 C between terminals of the cell. What is the electric potential between the two terminals?
A see saw is made of a uniform board 2.6 m long. A girl weighing 440 N sits on the left end, and a boy weighing 640 N sits on the right end. The see saw is balanced when the board is pivoted 1.1 m