Answer:
Mass will be the same
Explanation:
Mass does not change with gravity .... WEIGHT will be different, but not mass.
Answer:
E= 2 J
Explanation:
For this case we see how the mechanical energy is generated by the potential energy due to the change of position. We can express that as
E=m*g*h
Being "m" the mass of the object, "g" the value of the acceleration by gravity and "h" the distance traveled in the movement. So
E=m*g*h=0.8Kg*10m/s2*(0.75-0.5)=2J
Done
Answer:
70.035nN
Explanation:
M₁ = 7.0kg
m₂ = 1.5kg
r = 0.1m
G = 6.67*10⁻¹¹ Nm²/kg
Gravitational force (F) of an object is directly proportional to the product masses and inversely proportional to the square of their distance apart.
F = GM₁M₂ / r²
F = (6.67*10^-11 * 7.0 * 1.5) / (0.1)²
F = 7.0035*10^-10 / 0.01
F = 7.0035 * 10^-8 N
F = 70.035nN
The gravitational force acting on the bowling ball is 70.035nN.
I = pressure amplitude given = 0.2 W/m²
dB = decibel reading
decibel reading from the pressure amplitude is given as
dB = 10 log₁₀ (I/10⁻¹²)
inserting the values in the above equation
dB = 10 log₁₀ (0.2/10⁻¹²)
dB = 10 log₁₀ (2 x 10⁻¹/10⁻¹²)
dB = 10 log₁₀ (2 x 10⁻¹.10¹²)
dB = 10 log₁₀ (2 x 10¹²⁻¹)
dB = 10 log₁₀ (2 x 10¹¹)
dB = 113.01 db
hence the decibel reading comes out to be 113.01 db
<span>The discoveries Mme Curie made were of great benefit to physics, chemistry and medicine. During the time she was doing her research, the health effects of ionizing radiation were not known. The amount of radiation that she was exposed to led to her death. Even today her notebooks and other personal effects are highly contaminated with radioactive material.
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