A space traveler takes off from Earth and moves at speed 0.9700c toward the star Vega, which is 25.00 ly distant. How much time will have elapsed by Earth clocks (a) when the traveler reaches Vega and (b) when Earth observers receive word from the traveler that she has arrived? (c) How much older will Earth observers calculate the traveler to be (measured from her frame) when she reaches Vega than she was when she started the trip?

Q: A soccer player extends her lower leg in a kicking motion by a force with the muscle above the in…

A:

Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.78 g coins…

A:

Q: 34. An object of mass 3M, moving in the +x direction at speed vo, breaks into two pieces of mass M…

A: Given : Initial mass = 3M Initial Velocity = vo in +x direction Final mass 1 = 2M Final mass 2= M…

Q: Compute the displacement Work done-77.88 J Force=23 N

A: Given data:   Work (W) = 77.88 J Force (F) = 23 N Required: Displacement (d)

Q: 3. A 5.00-kg box is moving to the right with speed 3.00 m/s on a horizontal, frictionless surface.…

A:

Q: A 0.455 kg cart is allowed to roll smoothly (w/out friction) on a track. At the end of the track is…

A:

Q: 43) What is the change in entropy when 15.0 g of water at 100°C are turned into steam at 100°C? The…

A: in this question the second law of thaermodynamics is used for change in entropy.

Q: If you have ever been involved in a Slap Bet or had an unfortunate incident of being slapped, you…

A: Given Mass of hand=800g  Mass of effect tissue=120g  Increase in temperature of tissue=2o C Specific…

Q: 11) A brass rod is 69.5 cm long and an aluminum rod is 49.3 cm long when both rods are at an initial…

A: Given data- For aluminum-  LοA=49.3 cm, αA=2.4×10-5 K-1 For brass- LοB=69.5 cm, αB=2.0×10-5 K-1…

Q: A 4.2 -g bullet leaves the muzzle of a rifle with a speed of 340m / s . What force (assumed…

A: Write the given values with the suitable variables. m=4.2 g=0.0042 kgu=0 m/sv=340 m/sd=0.83 m Here,…

Q: A weight lifter lifts a 310 - N set of weights from ground level to a position over his head, a…

A:

Q: The length of the load arm of a lever is 6 m long and the effort arm is 3 m long. What is the effort…

A: Given: The length of the load arm s 6 m. The length of the effort arm is 3 m. The load is 40 N.

Q: QUESTION 6 Which of the following is NOT an example of accelerated motion? OA.A swinging pendulum…

A: (6) In projectile motion there no  any acceleration in horizontal direction therefore velocity in…

Q: 10) An aluminum rod 17.400 cm long at 20°C is heated to 100°C. What is its new length? Aluminum has…

A:

Q: In a given displacement of a particle, its kinetic energy increases by 25 J while its potential…

A:

Q: If A = 121-16] and B = -241 +10] then the vector C=2A-B has a magnitude of: e b) 42 c) 64 d) 90 A…

A: givenA→=12i-16j  B→=-24i+10j   and  C→=2A→-B→=2(12i-16j )-(-24i+10j)=48i-42j hence magnitude of…

Q: An initially stationary box of sand is to be pulled across a floor by means of a cable in which the…

A:

Q: In the figure, block 1 has mass m₁ = 460 g, block 2 has mass m₂ = 580 g, and the pulley is on a…

A:

Q: In the figure below, the boom, of length L, is uniform and has the same weight as the hanging block.…

A: The free-body diagram of the system is shown below.

Q: QUESTION 4 There are two horizontal forces on the 1.7 kg box in the overhead view of the figure but…

A: Given data:  Mass (m) = 1.7 kg F1 = 20 N Acceleration (a) = -13 m/s2 Required: Second force (F2)

Q: a rigid assembly of a thin hoop (of mass m = 0.25 kg and radius R = 0.19 m) and a thin radial rod…

A:

Q: 10) An aluminum rod 17.400 cm long at 20°C is heated to 100°C. What is its new length? Aluminum has…

A: Given data :                    Original length (L0) =  17.400 cm                   Initial…

Q: Hooke's Law relates the force on a spring to how much the spring is displaced from equilibrium…

A: Hooke's law states that the force on the spring is directly proportional to the amount of distortion…

Q: a) Q3: Two vectors lying in the xy plane are given by the equations A-51-21 and B-21-3j. AxB equals:…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A particle of mass m carrying a negative charge q passes through a perpendicular magnetic field B al…

A:

Q: The displacement of a particle is given by s = 2t³ - 42t² + 120t - 68 where s is in feet and t is in…

A:

Q: Calculate the rotational inertia of a meter stick, with mass 0.508 kg, about an axis perpendicular…

A: mass = 0.508 kg length = 1 m position of axis of rotation = 28.3 cm

Q: On March 20th, 2019, which of the following places did NOT receive oblique insolation? O Mbandaka,…

A: Sun is the ultimate source of energy for earth. The solar energy to a particular area is not…

Q: c) Give the components of the unit vector, which we will label u, that points up per- pendicular to…

A:

Q: The open-sea diving depth record is 534 metres; how much more pressure would the diver have been…

A:

Q: Find impulse Force 110 N Time=5 s

A: Impulse = force x time

Q: A flute may be thought of as a pipe open at both ends. When all the holes of a well-designed flute…

A:

Q: A U.S. penny has a diameter of 1.9000 cmcm at 20.0 ∘C∘C. The coin is made of a metal alloy (mostly…

A:

Q: metal bar, whose initial temperature was 30° C, is dropped into a large container of boiling water.…

A:

Q: A 5 [kg] rock flying through the air is traveling at a velocity of 12 [m/s] when it collides into…

A: Given  Mass of rock  m1 = 5 kg Speed of rock v1 = 12 m/s Mass of bean bag m2 = 20 kg Speed of bean…

Q: Find velocity Momnetum-22.3 kg*m/s Mass=2 kg

A:

Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless…

A:

Q: Exercise 8.62 A small rocket burns a mass 5.10×10-² kg of fuel per second, ejecting it as a gas with…

A:

Q: At an accident scene on a level road, investigators measure a car's skid mark to be 102m long. The…

A:

Q: The circuit elements shown in the sketch are connected to an ac generator at points A and B. If the…

A:

Q: An infinite line charge with uniform linear charge density 54.6 µC/cm pierces a Gaussian sphere with…

A: Write the given values with the suitable variables. λ=54.6 μC/cmr=5.53 cm Here, λ is the linear…

Q: 24) It is necessary to determine the specific heat of an unknown object. The mass of the object is…

A: Given : m = 201 g = 0.201 kg Q = 15 J ∆T = 10°C

Q: airplane diving at 36.90° with the horizontal drops a bag of sand from an altitude of 0.800 km. The…

A: Given:-  An airplane diving at 36.90° with the horizontal drops a bag of sand from an altitude of…

Q: (a) A spaceship is projected vertically upward from the Earth's surface with an initial speed of…

A:

Q: A softball having a mass of 0.25kg is pitched at 86.4km/h. By the time it reaches the plate, it may…

A: Write the given values with the suitable variables. m=0.25 kgu=86.4 km/h=86.4×10003600 m/s=24…

Q: What load can be applied at its other end ?

A: Given data;  Lever length= 100 cm Effort= 15 kgf Distance =40 cm Determine the load applied at its…

Q: If the speed of a car is increased by 95%, by what factor will its minimum braking distance be…

A: Consider the initial speed of the car is u.

Q: fisherman has caught a fish on his pole, and to keep the pole steady he has to apply an upward force…

A: in this question  we use conservation of tarque for one point and then net force of system is at…

Q: What is the most important physical part of the ISS? Explain how and why. If you use any sources…

A: ISS serves as an orbiting laboratory for the experiments in life sciences, physical sciences , earth…

Q: 4. Two blocks of mass 3.50 kg and 8.00 kg are connected by a massless string that passes over a…

A: