Two atoms that are isotopes of one and another must have the same number of what?

a.) protons

b.) neutrons

c.) electrons

d.) all particles

The corona is the least dense layer of the sun's atmosphere. How do you think the density of the solar wind compares to the density of the corona?

A car traveling east at 46.8 m/s passes a trooper hiding at the roadside. the driver uniformly reduces his speed to 25.0 m/s in 3.70 s.

Blank is the measurement of inertia

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy

How much power can I generate while lifting a mass for 30 seconds?

Object dropped from height of 25 meters, what velocity will it hit the ground?

How can the time period of a pendulum be decreased or increased

A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9930c.

ngrid kicks a football with an initial velocity of 12 m/s at an angle of 45° relative to the ground. The horizontal component of the initial velocity to the nearest tenth is m/s.

A 60-watt light bulb has a voltage of 120 volts applied across it and a current of 0.5 amperes flows through the bulb. What is the resistance of the light bulb?