Answer: 8.96
Explanation: The formula to find density is the mass divided by the volume
The most possible answer is letter B) Liquid.
If we are going to base the answer to the motion of particles, liquid is the best answer since solid's particle cannot move for they are tightly packed while the particles of gas and plasma (ionized gas) are free and move at high speeds.
Answer:
Work done = -220,000 Joules.
Explanation:
<u>Given the following data;</u>
Mass = 1100kg
Initial velocity = 20m/s
To find workdone, we would calculate the kinetic energy possessed by the car.
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
Where,
- K.E represents kinetic energy measured in Joules.
- M represents mass measured in kilograms.
- V represents velocity measured in metres per seconds square.
Substituting into the equation, we have;
K.E = 220,000J
Therefore, the workdone to bring the car to rest would be -220,000 Joules because the braking force is working to oppose the motion of the car.
Answer:
A. 0.01 [kg] mass moving at 200 [m/s]
Explanation:
Momentum is defined as the product of mass by Velocity.
where:
m = mass [kg]
v = velocity [m/s]
<u>For the case A</u>
<u /><u />
If we perform this same operation with the values of mass and velocity we see that the momentums will be greater than 2 [kg*m/s], therefore the lowest momentum is achieved with the values in case A.
They're all complete circuits, but 'A' won't DO anything, because it has nothing to make electrons want to flow around it (like a power supply, a solar cell, a battery etc).