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If the visible wavelengths of light range from 400 nm to 750 nm, what is the highest frequency associated with visible light? a. 2.3 × 10²⁰ Hz b. 3.0 × 10⁸ Hz c. 7.5 × 10¹⁴ Hz d. 5.0 × 10⁸ Hz

Masayo asked Dec 23, 2024

by Masayo

7.5k points

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1 vote

149k views

a model depicts two balloons of the same size with identical negative charges being moved toward one another at the same speed. how will the balloons interact with each other?

Manish Thakur asked Dec 23, 2024

by Manish Thakur

8.2k points

1 answer

2 votes

143k views

A steam engine delivers 5.4×10^8 J of work per minute and services 3.6×10^9 J of heat per minute from its boiler. i) What is the efficiency of the engine? ii) How much heat is wasted per minute?

The Holla asked Dec 23, 2024

by The Holla

8.9k points

1 answer

5 votes

71.3k views

A boy weighs (W) 270 N. What is his mass on Earth? Options: A) 27.6 kg B) 27.5 kg C) 27.4 kg D) 27.3 kg

Guy Avraham asked Dec 23, 2024

by Guy Avraham

8.8k points

1 answer

0 votes

92.3k views

as measured in earth's rest frame, a spaceship traveling 0.964 c at takes 11.2 years to travel between planets. how long does the trip take as measured by someone on the spaceship? group of answer choices

Abhay Chauhan asked Dec 23, 2024

by Abhay Chauhan

8.0k points

1 answer

0 votes

79.9k views

Cell theory is the current leading theory used to describe characteristics of living things. Which of the following is NOT part of the Cell Theory? Group of answer choices All cells come from pre-existing

Ajporterfield asked Dec 23, 2024

by Ajporterfield

8.6k points

1 answer

5 votes

202k views

Determine whether the following statements are true and give an explanation or counterexample. If you double the initial speed of a projectile, its range also doubles (assume no forces other than gravity

Therealjumbo asked Dec 23, 2024

by Therealjumbo

8.1k points

1 answer

2 votes

120k views

Reflect (-3,-4) across the x-axis. Then reflect the result across the x-axis again. What are the coordinates of the final point?

Fukkong asked Dec 23, 2024

by Fukkong

7.8k points

1 answer

5 votes

21.6k views

X-rays are produced whenever fast-moving electrons collide with any form of matter because: A. Electrons emit photons during collisions. B. Electrons transfer energy to matter. C. Electrons cause ionization

Edgar Navasardyan asked Dec 23, 2024

by Edgar Navasardyan

7.8k points

1 answer

0 votes

81.7k views

The valve on a tank of pressurized oxygen is opened and the oxygen rushes out. After oxygen gas stops flowing from a tank, some gas remains inside. Explain what determines how much gas is still in the

Randy Burden asked Dec 23, 2024

by Randy Burden

8.4k points

1 answer

0 votes

193k views

Ms. Burns is at a window in a building and spots her worst enemy in a building across an 7.1m wide alley. If she throws a water balloon directly horizontally at a velocity of 6.35m/s, how far below her

Charalamm asked Dec 23, 2024

by Charalamm

7.9k points

1 answer

5 votes

71.2k views

I've studied the formal procedure to pass from the uncoupled basis set of individual angular momenta to the coupled basis set of total angular momenta for polyelectronic atoms. I start from an electronic

Phils asked Dec 23, 2024

by Phils

8.2k points

1 answer

3 votes

190k views

A horse has a kinetic energy of 29/400 J. If the horse has a mass of 300 kg. what is the horse's speed? OA. 98 m/s OB. 33.1 m/s O C. 14 m/s OD. 9.9 m/s

Shaye asked Dec 23, 2024

by Shaye

8.4k points

1 answer

4 votes

9.1k views

The horizontal component of the earth's magnetic field at a place is 1/√3 times its vertical component there. Find the value of the angle of dip at that place. What is the ratio of the horizontal component

David Avsajanishvili asked Dec 23, 2024

by David Avsajanishvili

7.8k points

1 answer

4 votes

165k views

A stationary body explodes into two fragments, each of mass 1.0 kg, that move apart at speeds of 0.6c relative to the original body. Find the mass of the original body. a) 1 kg b) 1.5 kg c) 2 kg d) 2.5

TheMukhiddin asked Dec 23, 2024

by TheMukhiddin

8.0k points

1 answer

3 votes

99.0k views

A thin conducting shell of radius r is given charge 2q. Two point charges q and 3q are placed at a distance of 0.8r and 4r from the center of the shell. If the shell is earthed, find the charge that will

Kibowki asked Dec 23, 2024

by Kibowki

8.3k points

1 answer

4 votes

226k views

Convert 28.9 mm to µm. Express your answer to three significant figures. a) 28,900 µm b) 2,890 µm c) 289 µm d) 2.89 µm

Nouman Tahir asked Dec 23, 2024

by Nouman Tahir

8.0k points

1 answer

1 vote

192k views

What will her angular velocity be (in rpm) after she pulls in her arms and holds them tightly against her trunk? a) Increased b) Decreased c) Unchanged d) Cannot be determined

Ruben Bartelink asked Dec 23, 2024

by Ruben Bartelink

8.1k points

1 answer

1 vote

120k views

Assume that a resistive load of 100ohm is being fed by a voltage source of 34500 Volts rms. If the reactance of the line between the source and the load is 250ohm, a) Find the load current, load voltage,

Evilunclebill asked Dec 23, 2024

by Evilunclebill

8.7k points

1 answer

0 votes

110k views

Exposure factors of 110 kVp and 12 mAs are used with an 8:1 grid for a particular exposure. What should be the new mAs if a 12:1 grid is substituted? 15

Battmanz asked Dec 23, 2024

by Battmanz

8.4k points

1 answer

2 votes

212k views

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