Answer:
The speed of cart B is 11.21 m/s.
Explanation:
Given that,
Speed of cart A = 9.25 m/s
Speed of cart B = 7.15 m/s
Mass of cart A = 72.0 kg
Mass of cart B = 55.0 kg
Speed of card A after collision = 6.15 m/s
We need to calculate the speed of cart B
Using conservation of momentum
Put the value into the formula
Hence, The speed of cart B is 11.21 m/s.
I would say B.) the blonde hair was a result of the expression of a recessive gene. - the dominate gene is brown hair and the recessive gene is blonde hair...hope this helps
Amplitude, is the answer to the question
The question is about unclear since no picture provided. But from the question, it could be guessed that the box is moving back and forth on the frictionless plane at the amplitude of A in simple harmonic motion.
Answer:
D. At x=0, it's acceleration is at a maximum
Explanation:
As the box move forward, it reaches point A and than move backward. Theoretically, the box will move backwards, through its origin, to point -A and then going forward.
Point A is the maximum displacement of the box in this case. At this point, the box instantaneously stop to go backward. Therefore the velocity at that moment is zero.
From point -A, the box travel forward and keep building up speed due to the release in potential energy of the spring. And at point x=0, the velocity become maximum. After point x=0, the velocity of the box slows down due to the conversion of kinetic energy to potential energy of the spring. And as it reaches point A, it reaches zero velocity.
The same can be said as the box travels backward from point A to -A
Answer:
The acceleration of is
Explanation:
From the question we are told that
The mass of first block is
The angle of inclination of first block is
The coefficient of kinetic friction of the first block is
The mass of the second block is
The angle of inclination of the second block is
The coefficient of kinetic friction of the second block is
The acceleration of are same
The force acting on the mass is mathematically represented as
=>
Where T is the tension on the rope
The force acting on the mass is mathematically represented as
At equilibrium
So
making a the subject of the formula
substituting values
=>