Calculate the pressure exerted on a level ground by a man whose mass is 75kg and the area of both his feet is 280 cm2. Give your answer in Pascal (Pa)
Answers
Given:-
- Mass = 75 kg
- 280 cm² = 280/10000 m² = 28/1000 m²
Tobecalculated:-
Calculate the pressure exerted on a level ground.
Formulaused:-
Pressure = Force/Area
Solution:-
First of all,
We have to find out Force ;
Force = m × g
Force = 75 kg × 9.8 m/s²
Force = 735 kg.m/s² [ 1 N = kg.m/s² ]
Force = 735 N
Now,
Pressure = Force/Area
Pressure = 735 / 28/1000
Pressure = 735 × 1000 / 28
Pressure = 735000 / 28
Pressure = 26,250 Pascal
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a state reached when particles continue to move but in equal amounts in and out of the cell is called
b. 0.50 kgm/s
c. 0.70 kgm/s
d. 3.5 kgm/s
Answers
Answer: The correct option is (c.).
Explanation:
Mass of the cart A= 1.5 kg
Velocity of Cart A = 1.4 m/s towards right
Mass of the cart B = 1.0 kg
Velocity of Cart B = 1.4 m/s towards left
Momentum (P)= Mass × Velocity
(Negative sign means velocity of the cart is in opposite direction of that of the cart A)
Total Momentum =
Hence, the correct option is (c.).
m is mass
v is speed
so 1.5 kg*1.4m/s + 1 kg*1.4m/s
2.5kg*1.4m/s
3.5 kgm/s
hope it helps
Answers
Answers
Answer:
Electric field,
Explanation:
It is given that,
Charge on the balloon,
Force experienced by the balloon,
The relation between electric force and electric field is given by :
Hence, the electric field experienced by a charged balloon is
E = F/q
Here, F = 8.2 * 10⁻²
q = 9.4 * 10⁻¹⁰
Substitute values into the expression:
E = 8.2 * 10⁻² / 9.4 * 10⁻¹⁰
E = 8.72 * 10⁷ N/C
Hope this helps!
Answers
Answer: Fog
Explanation:
Fog can be defined as the clouds on ground. Fog is made of condensed air and that is being cooled down to the point where it cannot hold more water.
The frost overnight forms fog. During the long nights the air gets cooled down and the the moisture in the air also adds to the formation of fog.
Thus, the correct answer is fog.
B) It gains protons and becomes positively charged.
C) The number of positive and negative charges can be the same.
D) It has to be a metal.
E) There is no change in the distribution of the charge in the object.
Answers
Answer: Option C: The number of positive and negative charges can be same.
A substance is said to be polarized when there is non-uniform distribution of electric charge. When there gain or loss of electrons, ions are formed. It is not necessary that polarized object is metal. For example, Water is polarized. The oxygen atoms have partial negative charge and hydrogen atoms have partial positive charge.
Answer:
c
Explanation:
100%
Answers
The first who discovered The Einstein Roses bridge it was discovered by Ludwig flamm in 1916 a few months after Schwarzschild published his solution and was rediscovered by Albert Einstein and his colleague Nathan Rosen which was published then in 1935
as stated in the other ans, wormhole or its scientific name, Einstein–Rosen bridge, was discovered by Ludwig Flamm in 1916. But note that Flamm's discovery was through a general relativity solution on black hole dimension by Schwarzschild. Both Schwarzschild's solution and Flamm's discovery are purely mathematical - no wormhole in reality has been found so far.