In 20
seconds of freefall, an object will travel approximately
1.96
kilometers. What is this value expressed in centimeters, and written in scientific notation?

1.96
∗
10
3
cm

1.96
∗
10
5
cm

1.96
∗
10
4
cm

1.96
∗
10
6
cm

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Why are graphs useful when interpreting data

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.