Answer:
The temperature is (-19.67) degrees Celsius.
Explanation:
It is required to find the temperature if the speed of sound through air is measure to be 319 m/s.
The speed of sound in terms of temperature is given by :
T is temperature and v = 319 m/s
So, the temperature is (-19.67) degrees Celsius.
Answer:Correct answer: 15.85 kg·m/s
Explanation:
A 30 kg gun is standing on a frictionless sur-face. The gun fires a 50 g bullet with a muzzlevelocity of 317 m/s.The positive direction is that of the bullet.Calculate the momentum of the bullet im-mediately after the gun was fired.
Answer:
The electric flux though each face of the cube is 0.0942 Nm²/C.
Explanation:
The expression for the electric flux through the cuboid is given by:
Since, area of cuboid = 6a²
Where,
E is the electric field
a is the side of the cuboid
q is the charge
is the constant having value 8.85×10⁻¹² C²/Nm²
Thus, the expression for the electric flux through one face of the cuboid is given by:
So,
Given ,
q = 5.0×10⁻¹² C
Solving,
<u>The electric flux though each face of the cube is 0.0942 Nm²/C.</u>
<u></u>
The work done on the block is B) 400 J
Explanation:
The work done when lifting an object is equal to the change in gravitational potential energy of the object:
where
m is the mass of the object
g is the acceleration of gravity
is the change in height of the object
In this problem we have:
(mg) = 100 N is the weight of the block (product of mass and acceleration of gravity)
is the change in heigth of the object
Substituting, we find the work done:
Learn more about work:
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P is disproportional to t, which means that if P increases with x factor, the t will decrease with the same x factor. If t increases then P decreases