Answer:
Answer:
43.4J
Explanation:
We know that
Work done = total heat energy
But work done is force x distance
=> F = 19 x8.6 = 163.4 J
So the total heat. Will be Heat of cube + heat of floor = 163.4J
So that heat of floor will now be
floor = 163.4 J - 120 J = 43.4 Joules
Explanation:
Answer:
A) Force = 0.69 N
B) Acceleration = 0.34 m/s^2
Explanation:
The electric force is given by the expression:
K is the Coulomb constant equal to 9*10^9 N*m^2/C^2, q1 and 12 is the charge of the particles, and r is the distance:
Part B.
For the acceleration, you need Newton's second Law:
F = m*a
Then,
The average net force exerted is 36000 N.
<u>Explanation</u>:
According to Newton's 2nd law of motion,
The net force acting upon the object is the product of mass and acceleration of an object.
Force = ma
where m represents the mass,
a represents the acceleration.
Acceleration = (change in speed) / (change in time)
Acceleration = (45 m/s) / (7 sec) = (45 / 7) m/s²
Force = (5,600 kg) x (45 /7 m/s²)
Force = (800 x 45) Newtons
Force = 36000 Newtons.
Answer:
the constant force applied by Kitty is 8 N.
Explanation:
Given;
work done by Kitty, W = 32 J
distance moved by Kitty's trolley, d = 4 m
Let the constant force applied by Kitty = F
The work done by Kitty is calculated as follows;
W = F x d
F = W / d
F = 32 / 4
F = 8 N.
Therefore, the constant force applied by Kitty is 8 N.