Astudent makes a short electromagnet by winding 300 turns of wire around a wooden cylinder of diameter d= 5.0 cm. the coil is connected to a battery producing a current of 4.0 a in the wire what is the magnitude of the magnetic field a distance of 20.0 cm from the center of this device?

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.

What are the dimensions of the cross section that passes through the points a, f, g, and d?

Would it be correct to say the doppler effect is the apparent change in the speed of a wave due to the motion of the source? be sure to fully explain your position using at least 3 complete content related sentences.