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What needs to be considered when deciding on the best device for a particular energy application

Krystle asked Sep 23, 2024

by Krystle

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A 35 kg cart is pulled with a force of 80 N. There is a force of friction on the cart of 15 N. What is the acceleration of the cart? a. 0.5 m/s² b. 1.0 m/s² c. 2.0 m/s² d. 3.0 m/s²

Atbug asked Sep 23, 2024

by Atbug

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The Bernoulli's principle simply states that a gas or liquid that's flowing through a narrowed-down section of a passage will increase in speed and decrease in pressure compared with the speed and pressure

Kamiel Wanrooij asked Sep 23, 2024

by Kamiel Wanrooij

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The original 'portable' defibrillator was powered by __________? 1) 6 D batteries 2) 24 D batteries 3) 1 12 V car battery 4) 2 12 V car batteries 5) 4 12 V car batteries

Eustatos asked Sep 23, 2024

by Eustatos

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In a container with a movable piston, where F is the force acting on a piston of area A, pressure is defined as force per unit area. Thus, the pressure of the gas is [formula]. Options: A) P = F - A B)

Aeonaut asked Sep 23, 2024

by Aeonaut

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A sample of an unknown substance has a volume that is independent of its container. Which additional information is needed to determine the state of the sample? A. whether the sample conducts electricity

Satendra Rawat asked Sep 23, 2024

by Satendra Rawat

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5. A bullet accelerates at 5.8 x 10 m/s from rest as it travels the 0.80 m of the rifle barrel. a How long was the bullet in the barrel? b. What velocity does the bullet have as it leaves the barrel?

Mohammad Mirsafaei asked Sep 23, 2024

by Mohammad Mirsafaei

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Wangchuk participated in the move for a health walk. He covered a distance of 10 km due west in 1 hour. How long will he take to cover a distance of 833 m due west, if he walks with the same speed? a)

Mark Nashat asked Sep 23, 2024

by Mark Nashat

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1 answer

5 votes

109k views

If you make a pendulum in the real world, eventually it will stop swinging. Using the law of conservation of energy, explain what happened to its energy and why it stopped.

MarcelBeug asked Sep 23, 2024

by MarcelBeug

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For a particular semiconductor, Eg =1.50eV,mh∗ =10m e∗ ,T=300 K, and n₁ =1×10⁵ cm⁻³ (i) Determine the position of the intrinsic Fermi energy level with respect to the center of the bandgap

Abhishek Agarwala asked Sep 23, 2024

by Abhishek Agarwala

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2 votes

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Suppose that a disk is rotated at a constant speed of 100 rad/s, and we wish to stop it in 2 minutes. Assuming the moment of inertia (J) of the disk is 6 kgm^2, determine the torque necessary to stop the

Leo Romanovsky asked Sep 23, 2024

by Leo Romanovsky

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The lifetime of a highly unstable nucleus is 10^(-20)s. What is the smallest uncertainty in its decay energy? a) 6.63 × 10^(-34) J b) 2.11 × 10^(-13) J c) 1.05 × 10^(-13) J d) 4.24 × 10^(-26) J

Olemak asked Sep 23, 2024

by Olemak

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1 vote

208k views

A constant torque is applied to a rigid body whose moment of inertia is 4.0kg-m2 around the axis of rotation. If the wheel starts from rest and attains an angular velocity of 20.0 rad/s in 10.0 s, what

Mateusz Drost asked Sep 23, 2024

by Mateusz Drost

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Ranger Chris spots a fire at an angle of depression of 20° from his 70 feet tall tower. How far is the fire from the base of the tower? A) 23.94 ft B) 25.48 ft C) 192.32 ft D) 204.67 ft

Insitu asked Sep 23, 2024

by Insitu

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5 votes

226k views

A 2.02 g lead weight, initially at 10.6 °C, is submerged in 8.15 g of water at 52.8 °C in an insulated container. What is the final temperature of both the weight and the water at thermal equilibrium?

Keegan Murphy asked Sep 23, 2024

by Keegan Murphy

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3 votes

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Compared with a star in the middle of the Hertzsprung-Russell diagram, a star in the upper right of the diagram is A) fainter. B) hotter. C) larger. D) nonexistent because there are no stars that appear

John Channing asked Sep 23, 2024

by John Channing

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4 votes

43.7k views

A manufacturer of ice cream freezers claims that its product has a coefficient of performance of 1.3 while freezing ice cream at 250 K when surrounding environment is at 300 K. Is this claim valid?

Stevenrcfox asked Sep 23, 2024

by Stevenrcfox

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3 votes

149k views

What is the importance of the articular eminence angle? A) It determines occlusal force B) It influences disocclusion C) It affects crown morphology D) It controls mandibular movement

Mariano LEANCE asked Sep 23, 2024

by Mariano LEANCE

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5 votes

108k views

When an automobile moves with a constant velocity the power developed is used to overcome the frictional forces exerted by the air and the road. if the power developed in an engine is 60.0 hp, what total

Naresh Tank asked Sep 23, 2024

by Naresh Tank

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4 votes

168k views

Describe how observations of solar neutrinos and seismic vibrations on the surface of the Sun test astronomers' models of the Sun.

Cristian Ispan asked Sep 23, 2024

by Cristian Ispan

8.1k points

1 answer

0 votes

42.6k views

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