Answer:
Recoil speed = -100,000 m/s
Explanation:
First, this is an exercise that has relation with angular momentum.
So, you need to use the expressions for momentum.
Now, we can assume that Superman and the asteroid are initially at rest, so both moments are 0.
If superman hurls the asteroid, this means that he should have an equal moment but in the opposite direction of the asteroid, therefore, he also have an opposite recoil moment.
The expression to use is the following:
innitial momentum = final momentum
The final momentum, is the combination of superman recoil moment, and the asteroid so:
0 = Mass * Velocity
Let M1 and V1 be the mass and velocity of superman, while M2 and V2 would be the asteroid, thus we have:
0 = M1 * V1 + M2 * V2
As the problem states, the asteroid is 1000 times more massive than superman, so we can say that M2 = 1000M1. Replacing in the above expression we finally have:
0 = M1 * V1 + 1000M1 * V2
M1 * V1 = -1000M1V2 -----> Simplify M1
V1 = -1000V2
V1 = -1000 * 100
V1 = -100,000 m/s
This would be the recoil speed of Superman.
Answer:
-100,000m/s
Explanation:
Answer:
Explanation:
given,
mean (μ) = 12.3 Kg
standard deviation (σ ) = 0.1
random sample = 25
probability between 12.25 and 12.35 kg
using z-table
Answer:
3N
Explanation:
Note that when an object is immersed in water it weighs less.
This means the weight seen is the apparent weight.
Now in water there is upthrust and is a counter force acting on the object and this force is opposite to the weight of the fluid alongside the container 10N
The apparent weight is the real weight - the upthrust
7N-10 = -3N
The essence of the negative sign is to show that this force is acting in opposite direction to the weight.
Note: the upthrust is 10N and it's opposite to the weight of the fluid and the tube on which the object on the force meter is subjected to.
Answer: 2.72\cdot 10^{-3} m/s^2
Explanation:
I took the quiz
Answer : The frequency decreases by a factor of 2.
Explanation :
Given that the wave travels at a constant speed. The speed of the wave is given as :
Where
υ is the frequency of the wave
and λ is the wavelength of the wave.
In this case, the speed is constant. So, the relation between the frequency and the wavelength is inverse.
If the wavelength increases by a factor of 2, its frequency will decrease by a factor of 2.
Hence, the correct option is (A) " The frequency decreases by a factor of 2 ".
Answer:
B 1.08 BILLION
Explanation:
SEE ATTACHMENT