Answer:
the answer the correct one is the d
Explanation:
In the gate rotation experiment several things are measured.
- the distance from the hinges to the applied force, which must be measured with a tape measure
- The value of the force that is devised with a dynamometer
- the rotated angle that is measured with a protractor
- the time it takes to turn an angle, which is measured with a stopwatch
When examining the answer the correct one is the d
Answer:
-4500 N
Source: Brainly
The police officer must be angry 0_0
Answer:

Explanation:
The situation of the system Ryan - merry-go-round is modelled after the Principle of the Angular Momentum Conservation:

The initial speed of Ryan is:

Answer: Option (c) is the correct answer.
Explanation:
Physical properties are the properties in which there is no change in chemical composition of a substance. On the other hand, chemical properties are the properties which change the chemical composition of a substance.
For example, when water boils at
then it changes into vapor state whereas when water freezes at
then it changes state from liquid to solid.
This means only physical state of water is changing and there is no change in chemical composition of water.
Hence, we can conclude that best option describing given information is that these are the physical changes water undergoes.
Answer:
Spring constant, k = 24.1 N/m
Explanation:
Given that,
Weight of the object, W = 2.45 N
Time period of oscillation of simple harmonic motion, T = 0.64 s
To find,
Spring constant of the spring.
Solution,
In case of simple harmonic motion, the time period of oscillation is given by :

m is the mass of object


m = 0.25 kg


k = 24.09 N/m
or
k = 24.11 N/m
So, the spring constant of the spring is 24.1 N/m.