Your physics teacher is giving you a special gift a box of mass 20 kg with a mystery surpise insie .the box is placed on a frictionsed table .what is the weigth of the box and normal reaction over it by the table ?
Answers
Answer:
F = 196.2 N
Explanation:
Use Newtons law
F = m * a
F = 20 kg * 9.81 m/s²
F = 196.2 N
Answer:
Explanation:
Using weight formula:
The mass of the box is 20 kg.
The acceleration of gravity on Earth is 9.81 m/s².
The weight of the box is 196.2 N.
The net force of the box is zero, since the box is at rest. The normal force is exerted upward on it by the table.
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b. modern theory on the formations of the continents
c. precise observations of human anatomy
d. ideas for space travel
Answers
Answer: Option d: ideas of space travel.
Explanation:
Leonardo da Vinci was an Italian. He had numerous skills in various different fields. Leonardo contributed to technology for the effect of moon on the tides, his theory on formation of continents, human anatomy, art and much more. But he did not contribute in the ideas for space travel. Hence, the correct option is d.
Answer:D
Explanation:
Answers
The pressure of the sample of gas at 273 K is equal to 0.273 atm assuming the volume is constant.
What is Gay Lussac's law?
Gay-Lussac's law can be described as that when the volume of the gas remains constant then the pressure (P) of the gas and the absolute temperature (T) in a direct relationship.
Gay Lussca's law can be described as mentioned below:
P/T = k
The pressure of gas is directly proportional to absolute temperature of the gas.
P ∝ T ( Volume of gas is constant)
or, P₁/T₁ = P₂/T₂ .................(1)
Given, the initial temperature of the gas, T₁ = 400 K
The final temperature of the gas, T₂ = 273 K
The initial pressure of the gas, P₁ = 0.40 atm
The final pressure of the given gas can be calculated from Gay Lussac's law as:
P₂ = (0.40/400) ×273
P₂ = 0.273 atm
Therefore, the pressure of this gas at 273 K is 0.273 atm.
Learn more about Gay Lussac's law, here:
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B. price floor
C. price field
D. price ceiling
Answers
Answer:
B. Price floor
Explanation:
it is a price imposed by the government for a product , goods or commodity if the government feels that price is too low. In order to be effective Price floor must be more than the equilibrium price .
Answers
Answers
There is a chemical change because the liquid water, after passing an electric current, produces hydrogen and oxygen gases. This is a reaction. The molecular component of eater has been broken down into two. These two gases have different structures compared to water.
Answers
The force applied to pull an object is 200 N and the distance it sleds through the snow is 500 meters, so the amount of work done over here is 1,00,000 Nm.
What is Work?
When an external force moves an object over a distance, at least a fraction of that force must be exerted in the displacement's direction. This is known as work in physics. By multiplying the length of the path by the component of the force acting along the path, work can be calculated if the force is constant. The work W is equal to the force f times the distance d, or W = f.d, to mathematically describe this idea.
According to the question, the given values are :
Distance, d = 500 meters
Force, f = 200 Newton
So the formula for work done= force× displacement
W = 200 × 500
W = 1,00,000 Nm
Hence, the work done over here is 1,00,000 Nm.
To get more information about Work :
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