Answer:
<em>The increase of kinetic energy is 108,000 J</em>
Explanation:
<u>Kinetic Energy
</u>
Is the energy an object has due to its state of motion. It's proportional to the square of the speed and the mass.
The equation for the kinetic energy is:
Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
A car has a total mass of m=1,200 kg and travels at v1=12 m/s. Then it increases its speed at v2=18 m/s.
It's required to compute the increase of kinetic energy. We'll calculate both energies K1 and K2 and then subtract them.
The increase of kinetic energy is:
The increase of kinetic energy is 108,000 J
d because the pressure particals won't have a small space to bump to
The correct answer to the question is : The ostrich is motion.
EXPLANATION:
As per the question, the momentum of ostrich P = 5400 Kg. Km/hr.
The mass of the ostrich m = 120 Kg.
The momentum of a body is defined as the product of mass with velocity.
Mathematically P = mv.
The velocity of the ostrich v is calculated as -
v = 
= 
= 45 Km/hr
Hence, the ostrich is in motion as it is moving with a velocity of 45 Km/hr.
Answer:
Where is question 12, we need it to answer this question
Explanation:
Frequency and wavelength are inversely related. That is, when frequency increases, the value of the wavelength decreases and vice versa. The constant of proportionality of the relation is the speed of light that has a value of 3.0x10^8 m/s. We calculate as follows:
wavelength = speed of light /frequency
488x10^-9 = 3.8x10^8 / frequency
frequency = 6.15x10^14 /s = 6.15x10^14 Hz ------> OPTION 3
