How much force is needed to accelerate an object of mass 90kg at a rate of 1.2 m/s2

The diagrams show the sound waves produced in one second from various tuning forks. which sound wave has the lowest pitch?

A race driver has made a pit stop to refuel. after refueling, he leaves the pit area with an acceleration whose magnitude is 6.35 m/s2; after 4.0 s he enters the main speedway.

Because of churning rock and ash, the largest volcanic eruptions are sometimes surrounded by

In both transverse and longitudinal waves, the energy of the wave travels through but the particles do not move permanently. True False

A mechanic turns a wrench using a force of 27.00 N at a distance of 16.00 cm from the rotation axis. The force is perpendicular to the wrench handle. What magnitude torque does she apply to the wrench?

Chlorine is the atomic number 17 in the periodic table of elements. What information does the atomic number give you about the element chlorine? A) An atom of chlorine has 17 protons+. B) An atom if chlorine has 17 protons + and electrons-.

Which type of orbital will be occupied by the electrons of highest energy for the In + ground-state ion?

Consider a "crystal" consisting of two nuclei and two electrons. (a) Taking into account all the pairs of interactions, find the potential energy 1 of the system as a function of d.

jason hits a baseball off a tee toward right field. the ball has a horizontal velocity of 10 m/s and lands 5 meters from the tee. what is the height of the tee? show your work, including formula (s) and units.

What is the average amount of energy of motion in the particles of a substance