Answer:
The thermal energy released per gram is 19.2 kJ/g.
(3) is correct option.
Explanation:
Given that,
Weight of hydrocarbon = 2.50 g
Heat capacity
We need to calculate the thermal energy released
Using formula of thermal energy
Heat released =heat absorb by calorimeter+heat absorb by water
Put the value into the formula
Now, The thermal energy released per gram
Put the value into the formula
Hence, The thermal energy released per gram is 19.2 kJ/g.
Answer:
Explanation:
As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time
So we can say
now we have
here since magnetic field is constant so we have
now we have
now we have
Answer:
The force applied on one wheel during braking = 6.8 lb
Explanation:
Area of the piston (A) = 0.4
Force applied on the piston(F) = 6.4 lb
Pressure on the piston (P) =
⇒ P =
⇒ P = 16
This is the pressure inside the cylinder.
Let force applied on the brake pad =
Area of the brake pad ()= 1.7
Thus the pressure on the brake pad () =
When brake is applied on the vehicle the pressure on the piston is equal to pressure on the brake pad.
⇒ P =
⇒ 16 =
⇒ = 16 ×
Put the value of we get
⇒ = 16 × 1.7
⇒ = 27.2 lb
This the total force applied during braking.
The force applied on one wheel = =
= 6.8 lb
⇒ The force applied on one wheel during braking.