Recent questions in Physics

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What SI unit is used for measurements of temperature? A) Fahrenheit B) Celsius C) Kelvin D) none of the above

Slava Chernyak asked Oct 11, 2024

by Slava Chernyak

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77.3k views

In what ways was this "noble experiment a failure?

Pierrebo asked Oct 11, 2024

by Pierrebo

8.9k points

1 answer

4 votes

137k views

For a Venturi type flowmeter. What is the maximum velocity of air inside the tube if there is a pressure gradient of 50 mmHg and the area of the narrower section is 20% of the area of the inlet section?

Renita asked Oct 11, 2024

by Renita

7.9k points

1 answer

4 votes

15.9k views

The mass of ice needed to cool 60 g of water from 43 °C to 20 °C is?

Cyrille Armanger asked Oct 11, 2024

by Cyrille Armanger

7.7k points

1 answer

5 votes

123k views

A 3.2kg mass starts from rest at the top of the 30°inclined that is 6m long its speed as it reaches the bottom is 3m/s use the energy method to find the average friction force that regards the sliding

Distante asked Oct 11, 2024

by Distante

8.4k points

1 answer

5 votes

93.3k views

The linear systems and are consistent. Is the system necessarily consistent? Why or why not? 1) Yes, because both systems have the same number of equations and variables. 2) No, because the systems have

Jeesty asked Oct 11, 2024

by Jeesty

8.2k points

1 answer

2 votes

168k views

Which of the following masses has the largest gravitational force? A) 10kg B) 80kg C) 100kg D) 5kg

Quak asked Oct 11, 2024

by Quak

7.9k points

1 answer

5 votes

647 views

A television channel is assigned the frequency range from 54 MHz to 60MHz. A series RLC tuning circuit in a TV receiver resonates in the middle of this frequency range. The circuit uses a 19 pF capacitor.

Magnusarinell asked Oct 11, 2024

by Magnusarinell

7.9k points

1 answer

1 vote

10.6k views

How two sepearte 50 dB sounds together constitute 53 db

Mattbloke asked Oct 11, 2024

by Mattbloke

8.4k points

1 answer

2 votes

120k views

A boat travels upstream for 168 miles in 4 hours and returns in 3 hours traveling downstream in a local stream of water. What is the rate of the boat in still water and the rate of the current? The rate

Laugh asked Oct 11, 2024

by Laugh

8.1k points

1 answer

5 votes

134k views

A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 15.0 cm, giving it a charge of -39.0 μC. What is the charge density on the surface of the sphere?

Richardhell asked Oct 11, 2024

by Richardhell

7.7k points

1 answer

3 votes

186k views

A car crosses the start line with an initial velocity of 7 m/s. After 12 seconds, the car reaches a position of 105 m. From this information, which best describes its motion? Group of answer choices It

Nurit asked Oct 11, 2024

by Nurit

7.8k points

1 answer

3 votes

136k views

An object at the surface of Earth (at a distance R from the center of Earth) weighs 90 N. Its weight at a distance 3R from the center of Earth is:

Mskfisher asked Oct 11, 2024

by Mskfisher

8.2k points

1 answer

5 votes

107k views

When a substance changes from one type of matter to another, it has had a: A. chemical shift. B. physical change. C. chemical reaction. D. physical alteration.

Jason DeFontes asked Oct 11, 2024

by Jason DeFontes

7.8k points

1 answer

5 votes

220k views

Two balls are initially a distance above the ground. Ball A is dropped with an initial speed equal to zero. Ball B is launched vertically downward with speed v. Just before balls hit the ground, is the

Kvisle asked Oct 11, 2024

by Kvisle

8.0k points

1 answer

2 votes

49.0k views

Christopher is studying the motion of objects, so he makes the following hypothesis. As the mass of an object increases, its inertia also increases. What is the dependent variable in Christopher's study?

Andrew Gustar asked Oct 11, 2024

by Andrew Gustar

7.3k points

1 answer

4 votes

99.5k views

Next > On a transformer with a turn ratio of 72:1, if the power on the primary side is 2 MW, what is the power on the secondary side? answer choices: 36 W 2 MW 27.8 MW 36 MW

Chris Lundie asked Oct 11, 2024

by Chris Lundie

8.1k points

1 answer

2 votes

231k views

Matthew and Skylen are going to complete a 100 meters bike race. Matthew has already completed 35 meters of the race and is riding at a constant speed of 30 meters per hour when Skylen starts the race.

Scoobie asked Oct 11, 2024

by Scoobie

8.6k points

1 answer

2 votes

13.7k views

A spring has an unstretched length of 12.0 cm. It's spring constant (k) is 8.0 N/cm. What load is needed to stretch the spring to a length of 15.0 cm?

Fraxel asked Oct 11, 2024

by Fraxel

8.5k points

1 answer

0 votes

78.7k views

the voltage across a parallel plate capacitor with plates 2mm apart is 6v. the dielectric constant of material in the capacitor is 5. what is the electric field in the capacitor?

Atirag asked Oct 11, 2024

by Atirag

8.6k points

1 answer

5 votes

163k views

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