She feel warm due to sun shining on her back which shows the transfer of energy due to Radiation Mode of heat transfer.
Because in this case we do not need any medium to transfer the heat and all energy is transferred due to electromagnetic waves.
She feels warm sand under her feet which shows the heat transfer due to conduction mode.
Because in this mode of heat transfer the heat is transmitted by direct contact.
A cool breeze is blowing from the water which shows the heat transfer due to convection mode.
Here thermal energy is being transferred by the moving medium molecules.
Net force required to accelerate the car is 6000 N
Explanation:
- Force is calculated by the equation, F = Mass × Acceleration
- This is based on Newton's Second Law of Motion which states that the force acting on an object is its mass times the acceleration of the object.
Here, mass = 3000 kg and acceleration = 2 m/s²
⇒ Force = Mass × Acceleration
= 3000 × 2 = 6000 N
⇒ F = 6000 N
⇒ M = 3000 kg
⇒ a = 2 m/s²
Answer:
Lets take
u =velocity
θ =angle from horizontal
The horizontal component of velocity = u cosθ
The vertical component of velocity = u sinθ
The horizontal distance x in time t
x = u cosθ .t -----------1
The vertical distance y in time t
--------2
t= x/(u cosθ) ( tanθ=sinθ/cosθ)
Form above we can say that path of the projectile motion is parabolic.
I can help you do them for yourself :)
Answer:
The correct answer is C.) Static Friction > Sliding Friction
Explanation:
Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases. Hope this helps!