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8. Which of the following is a disadvantage of ocean thermal energy conversion? a. not enough cold water b. inefficient plants c. not enough warm water d. can only be done in cold areas

Xhan asked Oct 15, 2024

by Xhan

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4 votes

96.7k views

A force of 30 N is exerted on an object on a frictionless surface for a distance of 6.0 meters. If the object has a mass of 10 kg, calculate its velocity. a) 36 m/s b) 18 m/s c) 6.0 m/s d) 4.0 m/s

SnapShot asked Oct 15, 2024

by SnapShot

8.2k points

1 answer

5 votes

67.4k views

Sphere A is similar to sphere B. If the radius of sphere A is 3 times the radius of sphere B, then the volume of sphere A is _______ times the volume of sphere B? 1) 1/3 2) 1/9 3) 1/27 4) 1/81

Jchook asked Oct 15, 2024

by Jchook

8.3k points

1 answer

3 votes

75.9k views

A source of sound produces 500 compressions and 500 rarefactions in air in 30 s. Find the (a) frequency, and (b) wavelength of sound produced. (Consider speed of sound = 330 m s⁻¹)

Jake Long asked Oct 15, 2024

by Jake Long

7.8k points

1 answer

1 vote

156k views

A 14 ft ladder leans against a house making an angle of 60° with the ground. How far is the foot of the ladder from the house? A) 7 ft B) 10 ft C) 14 ft D) 17.32 ft

Nawin K Sharma asked Oct 15, 2024

by Nawin K Sharma

7.7k points

1 answer

4 votes

151k views

Which is easier to do between estimation and measurement using a measuring tool? discuss the advantages and disadvantages of each.

Kindisch asked Oct 15, 2024

by Kindisch

8.1k points

1 answer

5 votes

139k views

A train travels 120 km South in 2 hours and 30 minutes. What is its average speed in km/hour? A) 48 km/h B) 50 km/h C) 45 km/h D) 52 km/h

Thia asked Oct 15, 2024

by Thia

7.7k points

1 answer

2 votes

58.0k views

1-a car speeding up at a green light would be ______ speed. 2-a car slowing down at a red light would be ______speed. 3- a car turning would change ______, and is still accelerating, even if the speed

Yakiv asked Oct 15, 2024

by Yakiv

7.5k points

1 answer

1 vote

58.4k views

You throw a small rock straight up with an initial speed V0 from the edge of the roof of a building that is a distance H above the ground. The rock travels upward to a maximum height in time Tmax, misses

Jacobsimeon asked Oct 15, 2024

by Jacobsimeon

7.7k points

1 answer

4 votes

113k views

How are birds and geese able to sit on water

Aniket Suryavanshi asked Oct 15, 2024

by Aniket Suryavanshi

8.2k points

1 answer

0 votes

129k views

What is the internal resistance of an automobile battery (12.0 V emf, 15.0 V terminal voltage, 8.00 A current)? (a) 0.50 Ω (b) 1.50 Ω (c) 2.00 Ω (d) 3.00 Ω

Imcconnell asked Oct 15, 2024

by Imcconnell

7.8k points

1 answer

4 votes

79.6k views

Question 20 of 28 A mirror's axis runs through the center of the mirror perpendicular to it. What happens when a light ray hits a plane mirror at an angle of 30° to the mirror's axis? A. The ray is refracted

Camala asked Oct 15, 2024

by Camala

8.4k points

1 answer

2 votes

144k views

OPIC # 8 WAVES QUESTION Q23/P13/M/J/16 21 A beam of red laser light has length 1.0m. What is the order of magnitude of the number of wavelengths of the red light in 1.0m? A 10^4 B 10^6 C 10^8 D 10^10

Hayden Schiff asked Oct 15, 2024

by Hayden Schiff

8.8k points

1 answer

5 votes

234k views

Shane goes roller skating. Shane has a mass of 65kg. He rolls down a hill that is 10m high. He then rolls 13m up the following hill before coming to a rest. How fast was he rolling at the top of the first

Jeff Maass asked Oct 15, 2024

by Jeff Maass

8.6k points

1 answer

4 votes

14.7k views

A blue laser beam is incident on a metallic surface, causing electrons to be ejected from the metal. If the frequency of the laser beam is increased while the intensity of the beam is held fixed, A. the

JaggerJo asked Oct 15, 2024

by JaggerJo

7.8k points

1 answer

3 votes

34.3k views

Chosen for non motorized equipment is an overcurrent protection device of 40 amps. The smallest size that is allowed for copper equipment grounding wire for that circuit is 1. 6 2. 8 3. 10 4. 12

Anatoliy R asked Oct 15, 2024

by Anatoliy R

8.3k points

1 answer

5 votes

138k views

a)Explain the terms plastic deformation and elastic deformation. b)Plot a graph of stress-strain of a metal. State and explain important features of a graph. c) A copper wire 200cm long and 1.22mm in diameter

Lulas asked Oct 15, 2024

by Lulas

8.2k points

1 answer

2 votes

55.2k views

The electric charge passing any cross section of a metallic wire is given as a function of time as Q=3.0e⁻t sin(2t² +1) Coulomb Calculate the electric current flowing in the wire at t=0.1 second.

Tom Mayfield asked Oct 15, 2024

by Tom Mayfield

8.6k points

1 answer

5 votes

17.3k views

Discuss the characteristics of yellow journalism and its impact on media and society.

Glade Mellor asked Oct 15, 2024

by Glade Mellor

8.0k points

1 answer

3 votes

40.5k views

If matrix A and matrix AB are given, determine the first and second columns of B. Let the first column of B be denoted as C1 and the second column as C2.

Tuncaysenturk asked Oct 15, 2024

by Tuncaysenturk

7.3k points

1 answer

0 votes

194k views

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