Answer:
They can give us information and energy.
Explanation:
Fossils can be burned to give us energy and fuel. They can also give us information about the earths history.
The weight of the mass is 490 N
Explanation:
The weight of an object is equal to the gravitational force exerted by the Earth on the object, and it is given by the equation
where
m is the mass of the object
g is the acceleration due to gravity
For the object in this problem, the mass is
m 50 kg
While on the Earth's surface, the value of the acceleration of gravity is
Therefore, the weight of the object is:
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Answer:
E = hf. Plank's constant
L=mvr Angular momentum
F • t = m • Δ v. Implulse
: σ = F/A Stress
Explanation:
for youngs modulus its in the pictuure
We have the equation I = V/R ( according to ohm’s law
==> R = V / I
==> R = 120/0.75
==> R = 160 ohms
*I is current ( unit : ampere)
*V is voltage different and R is resistance