A quarterback throws a football at 40.0 km/hr to a receiver 50.0 yd away. how much time does it take the ball to reach the receiver?

What is electromagnetic wave made of

Why it is not possible to determine drift velocity of electron by timing its travel through conductor.

The static friction force is the force needed to keep an object moving at a constant velocity across a surface. the force needed to bring an object to rest. (incorrect) the minimum force required to overcome static friction and move an object.

What would happen if you threw a grenade into a woodchipper?

How does an atom of potassium-41 become a potassium ion with a + 1 charge? 19 K 39.10 A. The atom gains 1 proton, to make a total of 20. B. The atom loses 1 electron, to make a total of 18. C. The atom gains 1 proton, to make a total of 42. D.

Between a substance and a mixture.

Two massive objects are fixed in position. A third object is placeddirectly between the first two at the position at which the totalgravitational force on the third object due to the two massiveobjects is zero.

Which statement best describes the magnetic properties of a material? Magnetic materials have many spinning, unpaired electrons Paired electrons of magnetic materials can move to other atoms Electrons of magnetic materials are strongly held by

when we examine the structures of the other terrestrial planets in our solar system, we see that their structure is similar to Earth's. Why do you think this is the case?

An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D