Answer:
HEAT FLOWS INTO THE SURROUNDING FROM THE SYSTEM AND THE SIGN OF THE SYSTEM WILL BE POSITIVE.
Explanation:
This is so of an endothermic reaction and the contraction of the gas is an endothermic one because the total heat content of the products formed is more than that of the reactants and the gas therefore absorbs heat from the surrounding during the contraction. An endothermic reaction is one in which heat is absorbed from the surroundings and the change in heat content ΔH of is positive.
The reaction for the contraction of the gas produces + 10 J of heat.
Answer:
7.745 feet
Explanation:
Data provided:
Length of the pole, L = 6 feet
Distance between the stake from the bottom of the pole, B = 4 feet
let the length of the rope be 'x'
Now,
The top of the pole, the bottom of the pole and the stake forms a right angled triangle.
Thus,
Using the concept of Pythagoras theorem,
we have
length of the pole as perpendicular, Distance between the stake from the bottom of the pole as base and length of the rope as hypotenuse
therefore,
L² + B² = x²
on substituting the values, we get
6² + 4² = x²
or
x = √60
or
x = 7.745 feet
Answer:
B. No. He presented no scientific data to support his claim.
Gravity largely depends on the comparison of two objects; it's why you have the equation F= (GMm)/r^2. On Earth, you have different altitudes that, with the formula, will give different results for gravity because the radius is different everywhere. This difference on calculations, however, are seen to be miniscule. We know gravity as 9.81 m/s^2 but it might be different by thousandths or hundreds of thousandths of a decimal.
Answer:
C. resonating
an object being forced to vibrate at its natural frequency creates resonance