Suppose you want to move a big rock in your yard. It is about waist high and 4 feet long, has a volume of 1.2 m3 and a density of 2.5 g/cm3. How much does it weigh, in units of lbs?

A conductor carrying 14.7 amps of current is directed along the positive x-axis and perpendicular to a uniform magnetic field. A magnetic force per unit length of 0.125 N/m acts on the conductor in the negative y direction.

Astronomers estimate that the Sun has enough fuel for hydrogen fusion to last how many more years?

This force involves the attraction between objects with mass. a. strong nuclear b. gravitational c. electromagnetic d. weak nuclear

If its angular acceleration is constant and equal to 0.200 rad/s2, what is its angular velocity at t = 2.50 s? (assume the acceleration and velocity have the same direction)

A projectile proton with a speed of 1100 m/s collides elastically with a target proton initially at rest. The two protons then move along perpendicular paths, with the projectile path at 45° from the original direction.

What would provide specific information about the materials in the equipment used in a certain experiment

The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed

The blood vessels that carry blood away from the heart to the rest of the body are

Mary has been playing an extreme form of dodge ball, where she has to stand on a board and try not to fall off as objects are thrown at her. Which of the following skills should she improve to do well at this game?

Examine the reactants of the incomplete double-displacement reaction. 2NaCl + H2SO4 → _[blank]_. What is the product of the double-displacement reaction?