Answer: 0.85amps
Explanation: Power = 102watts; Voltage = 120voltsP = IxV ; I = P divided by V = 102 divided by 120 = <u>0.85amps</u>
The required spring constant:
The spring constant of the spring is .
Calculation:
The mass of the car is m=1200 kg, the speed of the car is v=25 m/s, and after colliding the spring is brought to rest at a distance of x=2.5m. Let the spring constant of the spring is, k.
From the conservation of energy,
Total initial kinetic energy= Total final potential energy of the spring
Therefore,
Now, substituting the values of the mass of the car, speed of the car, and displacement, we get:
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Answer:
of gravitational potential energy
Explanation:
the gravitational potential energy of an object is given by:
where
m is the mass of the object
g is the acceleration due to gravity
h is the heigth of the object above the ground
In this problem, we have:
- m = 67 kg is the mass of the stove
- g = 9.8 m/s^2 is the acceleration due to gravity
- h = 230 m is the height of the stove above the ground
Substituting into the equation, we find
Answer:
1000 Nm
2000 Nm
1.00007 seconds
Explanation:
I = Moment of inertia = 5 kgm²
= Angular acceleration
= Final angular velocity
= Initial angular velocity
t = Time taken
Torque is given by
The torque of the disc would be 1000 Nm
If
The torque of the disc would be 2000 Nm
From equation of rotational motion
It would take 1.00007 seconds to reach 3820 rpm
the answer is A.
because it says THE AIR which means there is air in the balloon