Answer: h = 3.34 m
Explanation:
If the hat is thrown straight up, then at its highest point it has no motion and no kinetic energy. All energy is potential energy
PE = mgh
h = PE/mg = 4.92 / (0.150(9.81)) = 3.34352... ≈3.34 m
Answer:
see detailed solution attached.
Explanation:
Answer:
2 × 10⁵
Explanation:
The total mass of the drug, ibuprofen = 10 kg
Kilograms and grams are related as:
1 kg = 1000 g
Also,
Grams and milligrams are related as:
1 g = 1000 mg
So,
1 kg = 10⁶ g
Mass of the drug, ibuprofen = 10 × 10⁶ mg = 10⁷ mg
Given, mass of tablet = 50 mg
So, number of tablets = total mass / Mass of 1 tablet = 10⁷ mg / 50 mg = 2 × 10⁵
<u>Number of 50 mg tablets = 2 × 10⁵</u>
Answer:
55.3 N, 223.3 N
Explanation:
First of all, we can find the angle of the inclined plane.
We have:
L = 5 m the length of the incline
h = 1.2 m is the height
We also have the relationship

where
is the angle of the incline. Solving for the angle,

Now we can find the components of the weight of the box, which is the force that the box exerts on the plank. Calling W = 230 N the weight of the box, we have:
- Component parallel to the incline:

- Component perpendicular to the incline:
