i need clear ans by hand and solve very very fast in 20 min and thank you | DYBALA Show that the group velocity can be written as dv dλ Vg = V-A

Q: The position of a particle along a coordinate axis at time t(in seconds) is given by s(t)=2t/t^4+1.…

A:

Q: A 3-ton airplane normally flies at 300 km/hr. If it experiences a 30 km/hr headwind (i.e., a wind…

A: There is no use of 3 ton (airplane weight) in the question. You have to apply basic physics…

Q: A car drives horizontally off a 73 m high cliff at a speed of 27 m/s. Ignore air resistance a) How…

A: Given, Height of cliff,h=73 m Horizontal speed,v=27 m/s

Q: Initial velocity u Angle of fire 0 Time of flight to apex of trajectory (uSiniyg Total time of…

A: Given that:- Initial velocity=u  Angle of projection=theta

Q: On train car at rest, a cannon has the range shown below. When the train car is moving to the right…

A:

Q: Don't use chat gbt

A: Step 1: Step 2: Step 3: Step 4:

Q: x = x, + Va! + }a,r? v = vồ, + 2a,(x– x,) v =v, + 2a,(y – y.) 2 Problem Every year at UC-Berkeley…

A: Given,initial velocity of the TV, v = 1.5 m/s along horizontal directionag = 10 m/s

Q: Sue is riding in a car travelling at 20x “ relative to a stop sign some distance ahead of the car.…

A: The problem can be solved by using the concept of relative velocity. Relative velocity is defined as…

Q: Required information A ball is thrown from a point 1.00 m above the ground. The initial velocity is…

A: Data Given ,  Initial velocity ( u ) = 20.8 m/s Angle ( θ ) = 30°  Ball is thrown from height ( h )…

Q: Use g 9.9 m/s and an initial velocity of 100 m/s. Show that the maximum range is obtained at 0 = 7/4…

A: 1) The object’s given initial velocity is 100 m/s. The object’s range can be found as, Here, u, g,…

Q: km/h to 36 km/h over a straight distance of 1.5 km. Calculate: a) The deceleration of the…

A:

Q: Determine the vertical height and time of impact of a stone throne at a wall. See images

A: Given, Initial velocity u=160 ft/s angle=30 degree Range r=640 ft Height of the wall H=50 ft

Q: A magnetic field directed into the page changes with time according to B = 0.073 Ot2 + 1.40, where B…

A: The question magnetic field which is directed into the page is changing with time  Relation with…

Frame of reference

In physics, a frame of reference is a coordinate system used to specify either the position or the orientation or velocity of a body. The origin of the coordinate acts as a reference point for measuring the position or relative motion of a body. The coordinate system can be a cartesian coordinate, cylindrical coordinate, or a polar coordinate.