Answer:
Explanation:
Given
Required
Determine the speed of B w.r.t A
The question implies that, we determine the relative velocity of B w.r.t A
Because both trains are moving towards one another, the required velocity is a 
both trains:
This is shown below:
Answer:
The work done on the hose by the time the hose reaches its relaxed length is 776.16 Joules
Explanation:
The given spring constant of the of the spring, k = 88.0 N/m
The length by which the hose is stretched, x = 4.20 m
For the hose that obeys Hooke's law, and the principle of conservation of energy, the work done by the force from the hose is equal to the potential energy given to the hose
The elastic potential energy, P.E., of a compressed spring is given as follows;
P.E. = 1/2·k·x²
∴ The potential energy given to hose, P.E. = 1/2 × 88.0 N/m × (4.20 m)²
1/2 × 88.0 N/m × (4.20 m)² = 776.16 J
The work done on the hose = The potential energy given to hose, P.E. = 776.16 J
The attraction of an object to something else with mass. What is the solar
system? The solar system is the alignment of planets around the sun. All the planets are in orbit around the sun. Our Solar System There are also Asteroids, comets, moons, and other forms of matter throughout space So What is the major role of gravity in our solar system? Holding Everything In Place. Without gravity a lot of things
<span>would go wrong. If there was no gravitational force on planets, people would float off into the sky.</span>
Answer:
- translation
- rotation, traslation
- traslation, rotation
- vibrating
Explanation:
El movimiento de un cuerpo cae por su propio peso <u>traslación</u>.
El movimiento de las ruedas de una bicicleta al ser pedaleada <u>rotación, traslación</u>.
El movimiento de la Tierra alrededor de sol <u>traslación, rotación</u>.
El movimiento de la cuerda de una guitarra cuando se está tocando música <u>vibración</u>.
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
The movement of a body falls under its own weight <u>translation</u>.
The movement of the wheels of a bicycle when being pedaled <u>rotation, translation.</u>
The movement of the Earth around the sun, <u>translation, rotation</u>.
The movement of a guitar string when playing music <u>vibrating</u>.
Answer
Given,
Periscope uses 45-45-90 prisms with total internal reflection adjacent to 45°.
refractive index of water, n_a = 1.33
refractive index of glass, n_g = 1.52
When the light enters the water, water will act as a lens and when we see the object from the periscope the object shown is farther than the usual distance.
