I need answers for 18 and 19 please
1 answer:
You might be interested in
Step-by-step explanation:
first and foremost start off with a proper FBD (I drew in the forces and acceleration just to refer back to it quicker, assume right and up are positive)
a) F net = Forces aiding the movement - forces opposing
if the box is sliding to the right then we've got
Fnet = 26 + (-3)
[notice how I wrote that they're both being added because they're vector forces]
Fnet = 23 N
b) using Newton's second law of motion, F = ma, we can find the mass
Fnet = ma
rearrange for mass
M = Fnet/a
M = 23 N / 2.0 ms^-2
M = 11.5 Kg
Answer:
Step-by-step explanation:
The volume of a cylinder is found using this formula:
Th height is 6 inches, the radius is 2 inches, and we are using 3.14 for pi. Substitute the values into the formula.
Solve the exponent.
- (2 in)²= 2 in * 2 in = 4 in²
Multiply the first two number.
This is already to the hundredth place, so we do not need to round.
The volume of the cylinder is <u>75.36 cubic inches.</u>