Answer:
Magnitude of impulse, |J| = 4 kg-m/s
Explanation:
It is given that,
Mass of cart 1, 
Mass of cart 2, 
Initial speed of cart 1, 
Initial speed of cart 2, 
(stationary)
The carts stick together. It is the case of inelastic collision. Let V is the combined speed of both carts. The momentum remains conserved.
V = 1 m/s
The magnitude of the impulse exerted by one cart on the other is given by:
J = -4 kg-m/s
or
|J| = 4 kg-m/s
So, the magnitude of the impulse exerted by one cart on the other 4 kg-m/s. Hence, this is required solution.
Answer:
Explanation:
Fuses and circuit breakers helps to:
protect equipment by stopping the flow of electric current; protect your house from fire
GFCI helps prevent electric shocks in a house:
GFCI outlets prevent electrocution if you are touching a wet appliance
Three 3ohms resistors in series would give you give a combined resistance of:
Resistance = (3+3+3)ohms = 9ohms
Answer:
λ = 2.4 m
Explanation:
The speed of a wave is defined as the product of the frequency and the wavelength of that wave:
where,
v = speed of wave = 24 m/s
f = frequency of wave = 10 Hz
λ = wavelength of the wave = ?
Therefore,
<u>λ = 2.4 m</u>
Answer:
Second Newton's law
Explanation:
Second Newton's law states that the acceleration of an object is related to the mass of an object and the force applied to it by:
where
F is the net force applied to an object
m is the mass of the object
a is the acceleration
The equation can be rewritten also as
(1)
we see that the acceleration is directly proportional to the force applied, F, and inversely proportional to the mass of the object, m.
In this problem, the force applied to the two objects (refrigerator and dumbbell) is the same, so we must look at their mass. Their mass can be found starting from their weight, which we know:
- refrigerator: 
- dumbbell: 
The dumbbell has a smaller mass, therefore by looking at formula (1), we can see that it will have more acceleration, and this is why it will move faster.
