Answer: A. water within a pan is heated and flows in a circular path.
Explanation: Convection is a type of heat transfer that occurs in liquids and gases. Convection occurs when there is a contrast in temperature between two parts of a liquid or gas. The hot part of a fluid rises above, and the cooler part sinks to the bottom resulting to circular motion of the fluid.
Answer:
Total displacement = 0
Explanation:
He lives his front porch and still returns to his front porch.
Now, displacement is a vector quantity and as such, it is the distance between the initial point of movement and the final point of movement.
In this case the initial point is the same as the final point and thus the displacement is zero.
a = acceleration of the bank cart = 4 m/s²
m = mass of the bank cart = 8000 kg
F = net force on the cart
According to newton's second law , Net force is the product of mass of the object and the acceleration of the object.
Net force = mass x net acceleration
hence Net force acting on the cart is given as
F = ma
F = 8000 x 4
F = 32000 N
hence the net force acting on the cart comes out to be 32000 N
degree celcius and degreee frahanit
As initial position of the ball is upwards and at some height above the surface of Earth
so here we can say that initial total energy of the ball is in the form of gravitational potential energy
this is given by equation
here we know that
h = initial height of the ball from ground
now again we know that ball is released from rest from that initial height and it continue from this position
As it start falling down the speed of the ball will increase due to gravity so here we can say that as ball go down its kinetic energy will increase
so here correct answer for energy transform is
<em>A. Gravitational potential energy to kinetic energy</em>
