It has 50kg with a velocity of 1 m/s times the speed of the cart divided by 2 and multiplied by kinectic x plus 5
Answer:
v = 60.62 km/h
Explanation:
Kinetic energy
Kinetic energy is that which is due to the movement of bodies and is calculted like this:
K = (1/2)mv² Formula (1)
Where:
K : Kinetic energy (J)
m: mass (kg)
v : speed (m/s)
Data for the truck
m = 15000 kg
v= 21 km/h = 21 *(1000m)/ (3600s)
v= 5.83 m/s
Calculation of the kinetic energy of the truck
We replace data in the formula (1)
K = (1/2)mv²
K = (1/2)(15000)(5.83)²
K = 255208.3 J
Data for the compact car
K = 255208.3 J = 255208.3 (N*m)
m = 1800 kg
Calculation of the speed of the compact car
We replace data in the formula (1)
K = (1/2)mv²
255208.3 = (1/2)( 1800)(v)²
255208.3 = ( 900)(v)²
v² = 255208.3 / ( 900)
v = 16.84 m/s
1 km = 1000 m
1 h = 3600 s
v = 16.84*(3600/1000)km/h
v = 60.62 km/h
The answer is false, if thats what youre asking.
Answer:
c. Fission and fusion are two processes that release very little amounts of energy.
Explanation:
This statement is false. In fact, both fission and fusion are processes which release very large amounts of energy. The statement can be rewritten as it is true as follows:
"Fission and fusion are two processes that release very large amounts of energy."
Fission occurs when a large nucleus break apart, splitting into smaller nuclei, while fusion occurs when two light nuclei combine together into a larger nucleus. In both cases, the mass of the reactants is larger than the mass of the final products, so some of the mass has been converted into energy, according to Einstein's equation:
where
E is the energy released
is the mass lost in the process
c is the speed of light
Since c is a very large number (), we see that even a very small mass causes the released of a huge amount of energy, so both fission and fusion release large amounts of energy.
Answer:
Explanation:
Check attachment for solution