Recent questions in Physics

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Relative density of gold is 19.3.The density of water is 1000 kg/m2 .What is the density of gold in sl units?

Menna asked Jul 13, 2023

by Menna

6.2k points

1 answer

7 votes

75.0k views

How long after the release of the first stone does the second stone hit the water?

Melkisadek asked Jul 13, 2023

by Melkisadek

5.8k points

1 answer

5 votes

11.9k views

A ball is gently dropped from a height of 30m. If its velocity increase uniform at the rate of 10m/s with what velocity will it strikes the ground ? After what time will it strike the ground?

Daniel Mikusa asked Jul 13, 2023

by Daniel Mikusa

5.7k points

1 answer

13 votes

26.1k views

In a hydroelectricity production, water falls from a dam into a turbine wheel 49 m below. What is the velocity of water at the turbine?

Abe Fehr asked Jul 13, 2023

by Abe Fehr

6.2k points

1 answer

1 vote

96.6k views

How much energy is required to completely boil away 0.350 kg of ice at 0oC?

BoundForGlory asked Jul 13, 2023

by BoundForGlory

6.3k points

1 answer

1 vote

127k views

Explain in terms of IMF and KE why liquids assume the shape of any container into which they are poured, whereas solids are rigid and retain their shapes.

Khalid Habib asked Jul 13, 2023

by Khalid Habib

6.0k points

1 answer

2 votes

195k views

True or false - The vector for a negative acceleration points in the opposite direction when compared to the vector for a positive acceleration.

Mladen Milosavljevic asked Jul 13, 2023

by Mladen Milosavljevic

6.6k points

1 answer

2 votes

68.8k views

What does the word projectile mean?

Areo asked Jul 13, 2023

by Areo

6.5k points

1 answer

5 votes

85.0k views

With what velocity will a 4.0kg rock hit the ground if it is dropped from a height of 111m?If the mass of the rock was doubled, would its final velocity change?

Bitcodr asked Jul 13, 2023

by Bitcodr

6.0k points

1 answer

4 votes

217k views

What is the piece of information that is communicated using the senses?

Raja Jawahar asked Jul 13, 2023

by Raja Jawahar

6.3k points

1 answer

21 votes

231k views

Which of the following is correct when convection occurs in the atmosphere? A Cool air rises and warm air sinks. B Cool air sinks and warm air rises. C Cool and warm air sink. D Cool and warm air rise.

Agniva De Sarker asked Jul 13, 2023

by Agniva De Sarker

6.6k points

2 answers

2 votes

79.9k views

The main characteristics used to classify stars include all of the following EXCEPT:A. shape.B. brightnessC. colorD. temperature

Bogdan Popa asked Jul 13, 2023

by Bogdan Popa

7.3k points

1 answer

2 votes

199k views

7. What is the mark and unit of work?

Zaman asked Jul 13, 2023

by Zaman

6.2k points

2 answers

22 votes

168k views

You observe a star cluster with a main-sequence turn-off point at spectral type G2 (the same spectral type as the Sun). What is the age of this star cluster

John Paul Manoza asked Jul 13, 2023

by John Paul Manoza

5.8k points

1 answer

15 votes

67.3k views

63 J of heat are added to a closed system. The initial energy of the system is 58J, and the final internal energy is 93J. How much work is being done by the system?

Mohamed Oraby asked Jul 13, 2023

by Mohamed Oraby

6.0k points

1 answer

21 votes

234k views

An engineer is troubleshooting trying to figure out the value of a capacitor. She knows that the charge value is 480 coulombs and the power supply feeds 110 V. What's the capacitor value?Question 19 options:A)

Vivek Hirpara asked Jul 13, 2023

by Vivek Hirpara

6.5k points

1 answer

0 votes

217k views

The speed of sound in air is 340 m/s. What is the wavelength of a soundwave that has a frequency of 977Hz?

Noban Hasan asked Jul 13, 2023

by Noban Hasan

6.6k points

2 answers

20 votes

194k views

Consider a fluid of density 3.43 g⋅cm−3 flowing through a pipe of varying cross-section. The diameter of the pipe in one section is 9.1 cm, while the diameter in a second section is 12.6 cm. When the diameter

Jeffrey Meyer asked Jul 13, 2023

by Jeffrey Meyer

6.0k points

1 answer

3 votes

48.8k views

A person pushes a box across a horizontal surface at a constant speed of 0.5 meter per second The box has a mass of 40 kilograms, and the coefficient of sliding friction is 0.25. The power supplied to

Sercan asked Jul 13, 2023

by Sercan

6.5k points

1 answer

6 votes

89.4k views

If a skater who is spinning extends his arms so as to double his RotationalInertia, by how much will his rate of spin change? (specify if thechange is an increase or a decrease!)

Rutger Huijsmans asked Jul 13, 2023

by Rutger Huijsmans

6.1k points

1 answer

4 votes

16.4k views

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