The following statement are correct about scalar and vectors except: (A) A vectors is a real number with direction e.g. work B) Scalar is a real numbers and examples of these are Density, Work and Energy C) A scalar has a real numbers while vectors have a direction only D Impulse and Momentum are the examples of Vector
Q: How much work is done by the force of gravity in moving a 10 kg block from an initial height of 2 m…
A: Given: Mass of block, m = 10 kg initial height, h1 = 2 m final height, h2 = 10 m Value Used:…
Q: Calculate the dot product between the following vectors a) A=i-2j+5k and B=-3i+2j+2k b) A=-3i+j+2k…
A: (a) Let A and B denote the two vectors, and C denote the dot product of the two vectors. Therefore,…
Q: You throw a book with a mass of 2 kg straight up from the ground at an initial velocity of 9 m/s. a)…
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Q: Work and Kinetic Energy I need help finding the angle using the data and the vector components :…
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Q: #1. Determine the scalar product of Ả = 6.0î + 4.0ĵ – 2.0k and B = 5.0î – 6.0f – 3.0k. A) 30î + 24ĵ…
A: The scalar product of two vectors A→=Axi^+Ayj^+Azk^ and B→=Bxi^+Byj^+Bzk^ is given by,…
Q: Determine the amount of work, in Joules, done to lift a 500 kilogram piano 4 meters above the…
A: Mass of paino(m) = 500 kgHeight above ground (h) = 4mLinear mass density of cable = 5 kg/mLength of…
Q: A 2.5 kg crate sliding along the floor has an initial velocity of 2.1 m/s in the +x direction.…
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Q: A particle has a function for Potential Energy as shown below. U = (7.30 J/m1) x1 + (9.40 J/m4) x4…
A: Given: U=7.30 Jmx+9.40 Jm4x4 The expression for force (F) on the particle is: F=-dUdx Substitute all…
Q: You are given the following two vectors: a = j + 2k, b = 2i - j 1. Calculate the scalar product…
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Q: The following figure shows the forces acting on an objecy. What is the net force? Be sure to show…
A: Given data: Three forces are acting on the object F1 = 87 N, towards right F2 = 47 N, towards right…
Q: How is it possible to apply a force to an object and accomplish no work? Provide an example
A: It is possible to apply a force to an object and accomplish no work there are many examples one of…
Q: Is work done whenever a force is exerted? Explain.
A: Force F is applied to body to displace it from one position to another position, then work done on a…
Q: (a) How much work is done in lifting a 1.4-kg book off the floor to put it on a desk that is 0.8 m…
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Q: Work is (select all that apply) the force times the parallel displacement the dot product of force…
A: Solution: Work done is defined as the dot product force and displacement where θ is the angle…
Q: Consider the two vectors A 5i-6j+ 2k and B= 3i- 5k. What is the dot product A B ? O -25 O 25 O -45 O…
A: Given data: A→ = 5i^ - 6j^ + 2k^B→ = 3i^ - 5k^ Required: The dot product of vector A and vector B
Q: (a) Find the work done by the force on the particle. (b) What is the angle between F and Ař?
A: Given, Force, F→=(5i-4j) N Displacement, ∆r→=(5i+j)m
Q: If we know that a force of 5 N is applied on an object while the object moves 2 m, can we determine…
A: Given : F = 5 N d = 2 m
Q: A robot is capable of lifting heavy objects directly up a ladder. The manufacturer claims the robot…
A: Mass of robot m = 500 kgThe power output of the robot is P = 150,000 W
Q: Determine the work of the force when it displaces 2 [m]. 500 N -2 m (a) 98.1 N 2 m (b) 2 m F-(6s) N…
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Q: A worker on the roof of a 50 m tall building needs to lift a 100 kg piece of equipment that is…
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Q: Example 74 Calculating Total Work Done from a Graph A force acting on a particle varies widh , as…
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- C7 7.) The work that a force does by acting on an object is equal to what? a.) the product of momentum and force (in the direction of motion) b.) the product of force (in the direction of motion) and distance and is negative if the force and motion are in the same direction c.) the product of force and distance without regard to direction d.) the product of force (in the direction of motion) and distance and is positive if the force and motion are in the same direction e.) the product of distance and kinetic energyExplain in your own words how would you calculate the work done by a variable force if you have the graph of the force as a function of the distance of an object.projectile has both change in kinetic and potential energy. Still the work done calculated between any two points is zero. This is due to _________ a) Presence of no external force b) No displacement c) The displacement being in both vertical and horizontal directions d) Inter-conversion of kinetic and potential energies
- An uncontrolled 850 kg car strikes squarely a motorway crash cushion in which the car is brought to rest by successively crushing steel barrels. The length of the crash cushion is 5.9 m, and the magnitude F of the force required to crush the barrels as a function of the distance the car has moved into the cushion is given by (image attached) a) Determine an expression for the work done by the force Fas a function of x b) If the car strikes the crash cushion with a velocity of 38km / h , determine the distance the car will move into the cushion before it comes to rest and the maximum deceleration of the car. c) Determine the maximum velocity with which the car can strike the cushion so that it will not hit the wall behind the cushion.Indicate the one with more potential energy and explain why. A full plane or an empty plane (both are flying )?Calculate the dot product of the vectors F = -i + 3j - 6k ; G = 7i - 5j + k. a. 28 b. -28 c. 30 d. -30
- The graph shown in Figure 7 was generated by a computer inter- faced to a force sensor that collected data several times per second as a block of wood was pulled with a horizontal force across a desk. (a) Estimate the work done by the force applied to the block. Show your calculations. (b) Describe sources of systematic error when using a forceThe variable force shown to the right movesan object from position x=0 to x=16 m.a) How much work is done by the force?b) Assume the object started from rest and weighs 15 kg.What is its final velocity?Common speech often uses the term "work" to refer to situations where, according to the physics definition of work, there is no actual work done. Find an example of this and explain why the non-physics public considers this work and what a proper physics response would be to this error. You must use ordinary language in an attempt to clarify what is happening do not rely on trigonometry or scalar dot products in you answer . Some examples you could consider include a person pushing on a wall and the wall not moving, a person doing a "bench seatisometric exercise where they squat against a wall, the moon being pulled by gravity as it orbits the earth, etc.