Device Light bulb LED Power (W)

Q: power mower does 8 x 104 J of work in 0.4 h. What power does it use

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Q: Question 5 Two vectors have a magnitude of 3 and 2 and their dot product has a value of -5. Which of…

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Q: C) The object in this figure moves under the actien of force 13N on a smooth surface. What is the…

A: Answer:-  Given  Force (F) = 13 N  Distance (S) = 5 m  Angel(theta) = 370  We know that  Work done…

Q: A certain rain cloud at an altitude of 2.10 km contains 3.20 107 kg of water vapor. How long would…

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Q: The product of the displacement and the component of the force in the direction of the displacement…

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Q: A large household air conditioner may consume 13.0 kW of power. What is the cost (in $) of operating…

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Q: Does the dot product of two vectors have direction as well as magnitude? yes no

A: No  they only have magnitude but no direction.

Q: Derive relationship of Power (a secondary dimension) in terms of primary dimensions

A: Any quantity can be defined in terms of primary quantities which are mass, length , time and…

Q: Find the value of force applied if work done is 240 J and displacement is 20 m.

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Q: A contractor lifts beams (985 kg) 52 m using a 10 hp-rated crane. Convert 10 hp to Watts (use 1 hp =…

A: mass of beam (m) = 985 kg Distance moved (d) = 52 m Power of crane (P) = 10 hp = 10×746 W = 7460 W…

Q: .. A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long.…

A: Work done, W = F.d

Q: If the scalar product of two vectors is equal to the magntitude of their vector product, what is the…

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Q: A chain 35.9 m long and weighing 47.5 N/m hangs from a drum on which it is to be wound. Determine…

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Q: A box is pulled with a force of 65 N to produce a displacement of 8 m. If the angle between the…

A: Given : F = 65 N d = 8 m θ = 32°

Q: 25. An object of mass 3.00 kg is subject to a force Fx that varies with position as in the Figure.…

A: Given, Mass of the object =3.00 kg The graph of Fx vs x is provided. We have to find the work done…

Q: If the dot product of two vectors is positive, does this imply that the vectors must have positive…

A: Dear student The dot product is defined as : A.B = AB×cos¢ Where, ¢ = Angle between the vectors

Q: The scalar product of two parallel vectors is zero Oa. False O b. True

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Q: Find the value of force applied if work done is 460 J and displacement is 30 m

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Q: or the two vectors and in the given figure, (a) find the scalar product. (b) find th lirection of…

A: A vector can be written as  A̅ = Ax î + Ay ĵ  Ax = A Cosθ  Ay = A Sinθ

Q: 50. Find the magnitude of the resultant of two 10-N forces applied at the same point when the angle…

A: Since, more than 1 question  is asked, solution for the first one is provided here. Please upload…

Q: Find the dot product of the vectors 21+3+ 3k and i + 5j + k. Stuck? Use a hint. Report a problem

A: Given: Two vectors as: A→=2i^+j^+3k^ B→=i^+5j^+k^  Find: The dot product of given vectors.

Q: A F (N) x (m) E (0,0) D Above is a graph of a force applied on an object as it moves in the…

A: Area under the force vs distance curve is the work done.   Total work done between the two dotted…

Q: (a) Find the dot product of Ā · B A = 2.0 î – 4.0 j +k B = 3.0 î + 4.0 Ĵ+ 10k (b) Find the angle…

A: A·B=(2i-4j+k)·(3i+4j+10k) A·B=6-16+10=0 Hence, Dot product of two vectors are 0.

Q: a force of 30.0 N is required to push a 20.0kg mass 2.00 m across the floor. the mass is then lifted…

A: The work done by a force is given by, W=Fdcosθ Here, F is the magnitude of the force, d is the…

Q: Given data : work done-500 J Force=25 N Find displacement

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Q: Ex. 73 A wire 2.5 m long and diameter 0.8 mm is stretched by a load 10 N. Find the work done if Y is…

A: To find-Work done=?Given-L=2.5 mD=0.8 mm=0.8×10-3mr=4×10-4 mF=10 NY=2×1011 N/m2A=πr2=π×16×10-8 m2

Q: Determine the scalar product of the following two vectors: A-3.01+4.01-2.0k B=2.01-6.0j-3.0k

A: Given data:  Two vectors A = 3.0i + 4.0j - 2.0k B = 2.0i - 6.0j - 3.0k Required:  The scalar product…