What do radio waves and microwaves have in common?

question 1 options:

a. both are found next to visible light on the electromagnetic spectrum.

b. both are at the side of the spectrum that has the shortest wavelengths.

c. both are at the side of the spectrum that has the lowest frequency.

d. both have higher frequencies than visible light.

How does an observation about an object differ from an inference about that object

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?