Answer:
The horizontal force acting on m2 is F + 9.8m1
Explanation:
Given;
Block m1 on left of block m2
Make a sketch of this problem;
F →→→→→→→→→→→-------m1--------m2
Apply Newton's second law of motion;
F = ma
where;
m is the total mass of the body
a is the acceleration of the body
The horizontal force acting on block m2 is the force applied to block m1 and force due to weight of block m1
F₂ = F + W1
F₂ = F + m1g
F₂ = F + 9.8m1
Therefore, the horizontal force acting on m2 is F + 9.8m1
Answer: A. Transverse
Explanation:
Sound is a mechanical transverse wave, it travels faster in solids than in liquids or gases. This is because the speed of the mechanical waves is determined by a relationship between the elastic properties of the medium in which they are propagated and the mass per unit volume of the medium.
In addition, the speed of sound varies with changes in the temperature of the medium. This is because an increase in temperature means that the frequency of interactions between the particles that transport the vibration increases, hence this increase in activity increases the speed.
Hence:
<h3>Sounds travels in a <u>transverse</u> wave</h3>
Answer: 2 days = 172,800 seconds
Explanation: 1 day is equal to 86,400 seconds so 2 days equal to 86,400 x 2 = 172,800 seconds.
The internal resistance of the washing machine is 137.14 Ω.
<h3>What is internal resistance?</h3>
Internal resistance is the inherent resistance of a conductor.
To calculate the internal resistance of the washing machine, we use the formula below.
Formula:
- P = I²R................... Equation 1
Where:
- P = Power of the washing machine
- I = Current
- R = Internal Resistance of the washing machine.
Make R the subject of the equation
- R = P/I²................ Equation 2
From the question,
Given:
Substitute the these values into equation 2
- R = 420/1.75²
- R = 137.14 Ω
Hence, the internal resistance of the washing machine is 137.14 Ω.
Learn more about internal resistance here: brainly.com/question/20595977
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Answer:
A ratio is a way to compare quantities of things.
Explanation:
by dividing the number of moles of each by the smallest number of moles.