Answer:
The answer is A
Explanation:
It is A because your body heat is warmer than the banana and when you hold it the heat is transferring over.
Answer:
Explanation:
Using the equation of motion v² = u²+2as
v is the final velocity = 40m/s
u is the iniyail velocity 0m/s
a is the acceleration
s is the displacement
Substituting in the formula;
40² = 0²+2a(50)
1600 = 100a
Divide both sides by 100
100a/100 = 1600/100
a = 16
Hence the car acceleration is 16m/s²
Answer:Probably water ballons,Paint,Etc
Explanation:
Your answer would be C, "By conserving energy"! A gas can do work through something called the First Law of Thermodynamics. Heat that energy used by the gas during this "work" cannot be created or destroyed however it can be transferred and converted. This energy can only be stored during these processes, not removed. An example of this would be gas in a cylindrical object such as a piston. When the gas is heated, it expands and moves the piston upwards. When it expands, it stores that energy it gains through the heat given.
I hope this helps! (:
Answer:
a) ∆U < 0 and ∆K > 0
Explanation:
The initial kinetic energy is zero since the objects are at rest
KE₁ = 0
The final kinetic energy is positive which means
KE₂ > 0
Therefore, the change is kinetic energy is positive
∆KE > 0
The change in gravitational potential energy is negative since the masses are unequal
Lets suppose mass of 1st object is m₁ and mass of 2nd m₂ and m₂ > m₁
∆U = m₁gh (positive)
∆U = m₂gh (negative)
Since m₂ > m₁ Total change in gravitational potential energy will be negative
∆U < 0
Therefore, the correct option is (a)
∆U < 0 and ∆K > 0