If element X has 42 protons, how many electrons does it have?

According to Little's Law, which of the following can reduce the number of skiers waiting in line to ride a chairlift at a ski resort? a. Using a process layout b. Decreasing the chairlift's bandwidth c. Increasing the chairlift's throughput rate d.

What type of wave is produced when you move one end of a horizontal spring up and down? A) Transverse Wave B) Compression (longitudinal) Wave C) Both type of waves are produced D) None of the above

A packaging company purchases corrugated cardboard boxes in which to pack its goods. The boxes are not made up when they are delivered, but are flat, A bundle of these boxes measures 0.60 m x 0.50 m x 0.20 m and has a weight of 72 N.

21. A positively charged rod will have the strongest attraction for

Sphere x, of mass 2 kg, is moving to the right at 10m/s. sphere y, of mass 4 kg, is moving to the left at 10m/s. the two spheres collide head-on. the magnitude of the impulse of x on y is:

Light from the sun travels through space to Earth's atmosphere. Which will light waves do when they move from empty space into matter made up of different gases? A. move at the same speed B. move faster as they transmit C. slow down and refract D.

A 12.5 kg box sliding on a frictionless flat surface tuns into a fixed spring which compresses at a distance x = 14.1 cm. the spring constant is 94.5 kN/m Find the initial speed of the box

An earth scientist who studies hydrosphere

In 1991 four English teenagers built an eletric car that could attain a speed of 30.0m/s. Suppose it takes 8.0s for this car to accelerate from 18.0m/s to 30.0m/s. What is the magnitude of the car's acceleration?

A capacitor with a capacitance of 490 μf is charged to a voltage of 260 v. then a wire is connected between the plates. how many joules of thermal energy are produced as the capacitor