What can we conclude from observing an attractive force between a positively charged rod and an object?

Why do you see colors when you look at reflected light from a cd

A body is at aheight of 81m and is ascending upwards with a velocity of 12m/s. a body of 2 kg weight is dropped from it. if g=10m/s^2. the body will reach the surface if earth in how much time.

Which of the following best describes a longitudinal wave? A. a wave which is caused by regularly repeating disturbance of the medium B. a disturbance that moves the medium along its line of travel c.

Displacement and velocity are examples of scalar quantities. true or false

You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at an average speed of 110 m/s. How much time does it take for the impulse, which travels a distance of 1.

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

What is the formula for calculating the mass when i have the number of volume and density

What is the name for potential difference that causes current to flow? (A) electric charge (B) static discharge (C) voltage

How is a herpetologist and a ecologist similar

In an oscillating lc circuit, when 75.0% of the total energy is stored in the inductor's magnetic field, (a) what multiple of the maximum charge is on the capacitor and (b) what multiple of the maximum current is in the inductor?