Answered: Given two vectors: Ã = 3î – 4§ and B =…

Name: Given two vectors: Ā = 3î – 4j and B = 5î – k, What is the scalar pro
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: Given two vectors: Ā = 3î – 4j and B = 5î – k, What is the scalar product ofof the two vectors?a. -41 - 3j -20kb. 19O C.-11O d. 15e. 41 + 3j - 20k

Science

Physics

Given two vectors: Ã = 3î – 4§ and B = 5î – k, What is the scalar product of of the two vectors? a. -41 - 3 -20k O b. 19 О с.-11 O d. 15 e. 41 + 3j - 20k

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 12P

See similar textbooks

Similar questions

A 3.00-kg object has a velocity (6.00i1.00j)m/s. (a) What is its kinetic energy at this moment? (b) What is the net work done on the object if its velocity changes to (8.00i+4.00j)m/s. (Note: From the definition of the dot product, v2=vv.)
If the dot product of two vectors vanishes, what can you say about their directions?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
Estimate the kinetic energy of the following: a. An ant walking across the kitchen floor b. A baseball thrown by a professional pitcher c. A car on the highway d. A large truck on the highway
A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0 above the horizontal and at a height of 10.0 m above the level ground. Neglect air resistance, (a) What is her speed when she leaves the track? (b) What is the maximum altitude she attains after leaving the track? (c) Where does she land relative to the end of the track?
Figure P8.39 shows two bar charts. In each, the final kinetic energy is unknown. a. Find Kf. b. If m = 2.5 kg, find vf.
Integrated Concepts (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2 against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?
A particle is subject to a force Fx that varies with position as shown in Figure P7.9. Find the work done by the force on the particle as it moves (a) from x = 0 to x = 5.00 m, (b) from x = 5.00 m to x = 10.0 m, and (c) from x = 10.0 m to x = 15.0 m. (d) What is the total work done by the force over the distance x = 0 to x = 15.0 m?
(a) What is the average useful power output of a person who does 6.00106J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
Give an example of something think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this without doing work.