two friend 50m apart are walking towards each other in a straight road. Man A is walking at a speed of 0.25m/s while the Man B is walking at 0.8m/s. If a pigeon above man A flies towards man B at a constant speed of 5 m/s and flies back again to man A when it is above man B. This goes on until two friends meet. Assuming that there is no speed loss every time the pigeon changes its direction.

Q: 1. Find the tension in each cord in the figure below if the mass of the suspended object is 2.0 kg.…

A:

Q: 9. Situational Question The rotation of a pulley is defined by the relation a=2t where a is in…

A:

Q: A disk, initially rotating at 145 rad/s, is slowed down with a constant angular acceleration of…

A: Given data:  Initial angular velocity (ωi) = 145 rad/s Angular acceleration (α) = -2.29 rad/s2…

Q: 12 The horizontal surface on which a 2 kg block slides is frictionless. The speed of the block…

A:

Q: a test charge was close to a region with electric field. How can the trajectory of the test charge…

A: How can the trajectory of the test charge be predicted?

Q: Calculate the partial pressure of oxygen at a barometric pressure of 500 mm Hg if oxygen is 20% of…

A: Write the given data. Pair=500 mmHg%O2=20%

Q: 8 A car of mass 400 kg is approaching a junction and needs to stop in 40 m. It is travelling at 15…

A:

Q: the effort required to lift a load of 40 N ?

A: Given; Length,l= 6m effort arm= 3m What is the effort required to lift a LOAD ? load=40N

Q: Let a=i-2j-2k and b=6i +31 + 2k; Find? (a) a + b and ab (b)-2a+ (c) The magnitude of a and b (d)āx b…

A: Given:-  a→= i^-2j^-2k^b→= 6i^+3j^+2k^ Find:-  a) a→+b→  and a→-b→ b) -2a→+b→3 c) The magnitude of…

Q: b) up c) 10 N down d) 9 N up Q10: A 2.5 kg block is pushed 5.0 m along a frictionless horizontal…

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: A piece of tin has a mass of 16.52 g and a volume of 2.26 cm³. What is the density of tin?

A: Introduction :  In this question we are provided with value of mass and volume . with these data we…

Q: Concept Simulation 9.1 illustrates how the forces can vary in problems of this type. A hiker, who…

A:

Q: 16-3. The disk is originally rotating at = 12 rad/s. If it is subjected to a constant angular…

A:

Q: This picture shows a radiometer. It is designed to be placed in a sunny window. One side of each…

A:

Q: A current of 9.03 A flows through a conductor for 7.5 seconds What amount of charge passes through…

A: Given data: Current (I) = 9.03 A Time (t) = 7.5 s Required: Charge (Q)

Q: A conducting sphere of 3.0 cm radius has a cavity of 2.0 cm radius and sharing the same center.…

A: Electric field is the Force on a unit positive test charge numerically. The field lines are…

Q: Which phenomena did Michael Faraday explore to help him invent the motor and the generator?   A.…

A: Michael Faraday designed an apparatus mercury bath which helped in transformation of electrical…

Q: In the figure, one end of a uniform beam of weight 380 N is hinged to a wall; the other end is…

A: weight = W = 380 N angle = 27

Q: Find the final velocity of car Initial velocity=0 m/s Acceleration=22 m/s2 Time=0.5 s

A: Given data : Initial velocity=U Acceleration=a Time=t   Required : Final velocity

Q: MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) A spaceship is projected vertically upward from the…

A:

Q: An object is 32 cmcm in front of a diverging lens with a focal length of -16 cmcm.     Part A Use…

A:

Q: Exercise 8.42 A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.21 kg…

A:

Q: Part A Use ray tracing to determine from which locations A--D the object's image is visible.

A:

Q: The figure shows the cross section of a long conducting cylinder with inner radius a= 2cm and outer…

A: Magnetic field

Q: A 57kg trampoline artist jumps vertically upward with a speed of 4.1m/s. If the trampoline, 3.5m…

A: Write the given values with the suitable variables. m=57 kgu=4.1 m/sh=3.5 mk=5.3×104 N/m Here, m, u,…

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 a lever, fulcrum is at one end at a distance of 30 cm from the load and effort is at the other…

A:

Q: Why is light both a particle and a wave?

A: Given  Why is light both a particle and a wave.

Q: The optical fiber has a core with a refractive index of 1.47, and a cladding with a refractive index…

A: Given: Refractive index of core n1=1.47, Refractive index of cladding  n2=1.46. Required: Amount of…

Q: Q1/What weight W is necessary to start the system of blocks shown in the figure moving to the right?…

A: Draw the free-body diagram of the 30 kN block.

Q: A cylinder shown has a weight of 180 lb. Assuming the cylinder to be solid in determining the moment…

A: in this question  we use tangential acceleration . and use equation  of motion .

Q: Which of the following is least likely to always hold valid about equipotential surface(s) and/or…

A:

Q: Q13: A 4 kg mass is projected down a rough ( shown. )circular track (R = 2 m) as The speed of the…

A: R = 2 m mass (m) = 4 kg vA = 4 m/s vB = 6 m/s

Q: Q2/ The acceleration of a particle is given by a = 3t-30, where a is in meters per second squared…

A:

Q: The electromagnetic wave of frequency w travels in the x-direction through vacuum. It is polarized…

A: The oscillations are the basic cause of waves. The wave is only produced when we have something of…

Q: f 2 kg is at rest. Another ball of 4 kg is moving in a straight line at 18 m/s collides with the 2…

A: Given  Mass of first ball is m1=4 kg Initial velocity of first ball is v1=18 m/s Mass of second ball…

Q: A cannon fires a shell directly at you from 2000 m away, at a speed of 216 m/s. The speed of sound…

A:

Q: - Which of the following is an example of potential energy? (2009) A A glass jar sitting on a shelf…

A:

Q: d) 64 Q2: A block of mass 0.3 kg is dropped from rest at a height 2 m directly above the top of a…

A: Part (2): Given: The mass of the object is 0.3 kg. The height of the object is  2 m from the ground.…

Q: A particle moves in a circular path. In each situation, the particle is in the position as shown in…

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: Given information: The mass of the blocks: m1=460 gm2=580 g The radius of the pully (R) = 5.3 cm The…

Q: In the figure, two 7.60 kg blocks are connected by a massless string over a pulley of radius 1.60 cm…

A: a) Apply the second angular kinematic equation to determine the angular acceleration of the pulley.

Q: Which of the following statements is FALSE regarding the experiment in magnetic field where you…

A: Required False statements

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

A:

Q: A 3-m string is driven by a 240 Hz vibrator at its end. Determine the speed of transverse waves on…

A:

Q: 39) A heat engine receives 7000 J of heat and loses 3000 J in each cycle. What is the efficiency of…

A:

Q: When opening a door you push on it perpendicularly with a force of 75 N at a distance of 0.875 m…

A: Given: The applied force is 75 N perpendiuclar. The distance of the hinged from 0.875 m.

Q: The wheel shown in the figure rolls without slipping on the horizontal plane. The angular velocity…

A:

Q: A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.…

A:

Projectile Motion