resultant velocity of Rosa's boat (relative to the banks)?

Q: A student with a mass of 46 kg stands on a bathroom scale in an elevator. What can you say about the…

A:

Q: Suppose a motorcycle accelerates for t = 6 seconds at a constant rate of acceleration (a = 2.5…

A: Given data:  Time (t) = 6 s Acceleration (a) = 2.5 m/s2 Final velocity (v) = 34 m/s Required:…

Q: 9. A 100 gram bullet (velocity 50m/sec) is fired into a 1 kg block of wood attached to a spring and…

A: Write the given values with the suitable variables. m=100 g=0.1 kgu=50 m/sM=1 kgx=10 cm=0.1 m Here,…

Q: 2. A standing sound wave is set up inside a narrow glass tube which has both ends open. The first…

A:

Q: 1. There are 82 protons in a lead nucleus. Why doesn't the lead nucleus burst apart? a) Coulomb…

A:

Q: A 1.5 kg ball is thrown upward with a velocity of 6 m/s. a). What is the kinetic energy of the ball…

A: Given data:  Mass (m) = 1.5 kg Initial velocity (u) = 6 m/s, upward Required:  The initial kinetic…

Q: On an approximately straight road a lady is waiting for a Grab car to pick her up. The Grab driver…

A: Given data:  Initial velocity (u) = 15 m/s Final velocity (v) = 100 m/s Acceleration (a) = 0.47 m/s2…

Q: How fast must a 2.7-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Given that,  Mass of ping-pong ball, mp=2.7 g=2.7×10-3 kg Mass of baseball, mb=145 g=145×10-3 kg…

Q: Calculate the Fermi Energy of a metal (in eV) with an atomic weight of 88.1 g/mol, density of 5.1…

A:

Q: Suppose that two cars, A and B, accelerate along a highway. If both cars locked the brakes to a stop…

A: Given value--- both cars locked the brakes to a stop at the same amount of time. the initial speed…

Q: Find the following for the given equation. r(t) = (e-t, 5t², 7 tan(t)) (a) r(t) = (b) r"(t) = (c)…

A: Given: r(t) = <e-t, 5t2, 7tan(t)>

Q: car skids 3 m before stopping from a 33 km/h velocity. How far will the car skid if it is travelling…

A: Given value--- car skids 3 m before stopping from a 33 km/h velocity. We have to find--- How far…

Q: Find the following for the given equation. r(t) = (e-t, 5t², 7 tan(t)) (a) r'(t): = (b) r"(t) = (c)…

A:

Q: Which

A: Position Velicity Acceleration all these quantities depends on frame of reference.

Q: With what initial speed (in given units) does the skateboarder need to barely clear the pool?

A:

Q: 1 The number of turns in the coil of an ac generator is 5000 and the area of the coil is 0.25 m².…

A: Peak value of emf =157.1 kV

Q: What is the answer for part D and E?

A:

Q: A car drives horizontally off the edge of a cliff that is 68.1 m high. The police at the scene of…

A:

Q: Two vehicles are approaching an intersection. One is a 2500 kg pickup traveling at 16.0 m/s from…

A:

Q: Two astronauts, of masses 56.4 kg and 71.5 kg, are initially right next to each other and at rest in…

A:

Q: 3. A 1-kg mass at sea level on Earth (g = 9.80 m/s²) weighs 2.2 lbs. How much would a baseball (m =…

A: Given-             weight of 1 kg mass at sea level on earth = 2.2 lbs              acceleration due…

Q: In a vacuum, two particles have charges of 9₁ and 92, where q₁=+3.1 μC. They are separated by a…

A:

Q: 14 If you are driving around in a circular motion at a constant speed, what can be said about your…

A: Our motion is circular motion with constant speed Let's check each option one by one  A. Velocity is…

Q: There are two trains (A and B) each with the same whistle that produces a sound wave at 403 Hz.…

A:

Q: Orbital radius of the earth r = 1.5 x 1011 m. Given mass of the sun M =1.9 X 1030 kg. Using Kepler's…

A: Given Data:- Orbital radius of the Earth is r=1.5×1011 m Mass of the sun is M=1.9×1030 kg Universal…

Q: Suppose you wanted to store 6 µC of charge in a capacitor across a voltage of 120 V. What…

A:

Q: A uranium nucleus  238U (initially at rest) decays into a thorium nucleus 234Th and an alpha…

A:

Q: Find the net torque on the wheel in the figure below about the axle through O perpendicular to the…

A: Torque is given as Torque = force ×prependicular distance of point of application of force from axis…

Q: In the Static Electricity activity, when the balloon was brought close to the wall, the wall was…

A: options: A,C and D are correct

Q: A bowling ball accidentally falls out of the cargo bay of an airliner as it flies along in a…

A: As shown in the figure initially the bowl is inside the plane  The bowl after leaving the plane is…

Q: A flexible shaft consists of a 0.20-in-diameter steel wire encased in a stationary tube that fits…

A:

Q: bugs, Buzz and Crunchy, are siting on a spinning disk. The disk of radius 7.5 m spins with an…

A: Angular velocity ω = 90 degrees/ sec = π/2 rad/s  = 1.57 rad/s

Q: The vector position of a particle varies in time according to the expression = 6.60 î - 6.20t² ĵ…

A:

Q: A concrete highway curve of radius 80.0 m is banked at a 13.0° angle. Part A What is the maximum…

A:

Q: A 4.44 kg bundle starts up a 35.9° incline with 124 J of kinetic energy. How far will it slide up…

A:

Q: How long will it take a car to attain a velocity of 40km per hr from rest if its acceleration is…

A: The final velocity is given as V = 40 x (1000/3600) m/s = 11.11 m/s

Q: A 91.0 kg person climbs stairs, gaining 4.00 meters in height. Find the work done (in J) to…

A: Work done=3567.2 j

Q: A physics student adds two displacement vectors with magnitudes of 8.0 km and 6.0 km. Which one of…

A:

Q: A system is made up of a pulley of radius a with no friction and mass , as well as a massless string…

A: Since mass m1 and m2 is fixed by a string, so if we know the postion of one mass then position of…

Q: What is the Hamilton's principle, and what derivations have we employed as a result of

A:

Q: A truck with 18-in.-diameter wheels is traveling at 45 mph. Round answers to 2 decimal places as…

A:

Q: 1. A weight lifter lifts a 350-N set of weights from ground level to a position over his head, a…

A: Given -           weight = 350 N           vertical distance= 2 m

Q: Find the number of neutrons in 118 Cs.

A: Givens  Cs stands for Cesium The atomic number of cesium is Z=55 mass number, A=118

Q: *9. A disk of mass m moving in the positive x direction collides with a stationary disk, also of…

A:

Q: The figure below shows the drive train of a bicycle that has wheels 67.3 cm in diameter and pedal…

A:

Q: The drawing shows a 22.5-kg crate that is initially at rest. Note that the view is one looking down…

A: Given that--- Mass = 22.5 kg. Coefficient of kinetic friction = 0.395. Angle = 55 degree. We have…

Q: A heavy ball with a weight of 150 N is hung from the ceiling of a lecture hall on a 4.6-m-long rope.…

A: Given: The weight of the ball is 150 N. The speed of the ball at the lower point is 5.7 m/s. The…

Q: Use Kirchhoff's rules to calculate currents I1, I2, and I3, and compare them with the experimental…

A: The circuit diagram is shown below.

Q: Use the following information to answer question 14 and Numerical Response 2. A beam of electrons is…

A:

Q: Suppose you swing a ball of mass m in a vertical circle on a string of length L. As you probably…

A:

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.