6,669 Answered Questions for the topic physics

Physics Math

7h

#### What is the vrms of hydrogen on the surface of the sun if its temperature is 5.07E3 degC?

What is the vrms of hydrogen on the surface of the sun if its temperature is 5.07E3 degC?What is the vrms of hydrogen on the surface of the earth if its temperature is 20.8 degC?

Physics Math

8h

#### If the coefficient for linear expansion of copper is approximately 16.8 x 10-6 degC-1, what percent increase would a copper rod 45.0 cm long have if it had a temperature change of 111 degC?

Physics Science

14h

#### Physics question

A box takes 350 N to start moving when the coefficient of static friction is 0.35. What is the mass of the box? m = 101.94 kgIdk how to do this prob

Physics

22h

#### A particle (m = 4.1 × 10-28 kg) starting from rest, experiences an acceleration of 2.4 × 107 m/s2 for 5.0 s. What is its de Broglie wavelength λ at the end of this period?

A particle (m = 4.1 × 10-28 kg) starting from rest, experiences an acceleration of 2.4 × 107 m/s2 for 5.0 s. What is its de Broglie wavelength λ at the end of this period?

#### How much longer is it when it contains boiling water at 1 atm pressure?

An aluminum vat is 12 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?

#### At what temperature would the wing be 2 cm (0.02 m) shorter?

An aluminum wing on a passenger jet is 28 m long when its temperature is 15°C. At what temperature would the wing be 2 cm (0.02 m) shorter?

#### What is its change in internal energy?

Air in a balloon does 57 J of work while absorbing 98 J of heat. What is its change in internal energy?

#### What is the total mass (in kg) of water vapor in the air in the apartment?

An apartment has the dimensions 15 m by 8 m by 5 m. The temperature is 25°C, and the relative humidity is 57 percent. What is the total mass (in kg) of water vapor in the air in the apartment?

#### What is the engine's efficiency (in percent)?

As a gasoline engine is running, an amount of gasoline containing 10,200 J of chemical potential energy is burned in 1 s. During that second, the engine does 3,400 J of work.(a)What is the engine's...
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2d

#### how much energy (in J) was made unavailable for useful work as a result?

An irreversible process takes place by which the entropy of the universe increases by 1.66 J/K. If the temperature of the environment in which the process occurred is 230 K, how much energy (in J)...
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#### how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?

A machinist wishes to insert a steel rod with a diameter of 9 mm into a hole with a diameter of 8.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it...
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#### A 3 kg block is resting on a ramp inclined at 20 degrees above the horizontal. What is the magnitude of the normal force acting on the block?

A 3 kg block is resting on a ramp inclined at 20 degrees above the horizontal. What is the magnitude of the normal force acting on the block? Report your answer to the nearest whole number.

#### In the drawing, the box is being pulled up the ramp at a constant velocity. The ramp's angle is 30 degrees.

In the drawing, the box is being pulled up the ramp at a constant velocity. The ramp's angle is 30 degrees.A. How does the force applied parallel to the ramp compare to the force of friction?B. If...
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#### A 3 kg block is resting on a ramp inclined at 20 degrees above the horizontal. What is the magnitude of the normal force acting on the block?

A 3 kg block is resting on a ramp inclined at 20 degrees above the horizontal. What is the magnitude of the normal force acting on the block?

#### what amount of energy would be produced?

A solitary bit of residue has a mass of 9.35 x 10^-10 kg. On the off chance that the mass of this bit of residue were changed over to unadulterated energy in an atomic response, a) what amount of...
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Physics

2d

#### How do I solve this problem?

Cork has a density of 0.24 g/cm3. Assuming water has a density of 1.00 g/cm3, what percentage of a cork stopper will be submerged under water if it is floating on the surface? What percentage would...
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#### What is the velocity in miles per hour?

The "Niagara Falls" water slide to waterpark and has a height of 76.0 feet (23.2 meters). Because the slide is not completely vertical the total length of the slide is 90.0 feet (27.4 meters). A...
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Physics

3d

#### Two carts moving in the same direction, as shown in the figure below, collide.Cars What is the velocity of the two carts AFTER the collision, assuming that they stick together after the collision.

Two carts moving in the same direction, as shown in the figure below, collide.What is the velocity of the two carts AFTER the collision, assuming that they stick together after the collision.i...
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#### how much energy was converted to Thermal Energy

The "Niagara Falls" water slide to waterpark and has a height of 76.0 feet (23.2 meters). Because the slide is not completely vertical the total length of the slide is 90.0 feet (27.4 meters). A...
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Physics Physics B

3d

#### How much work is done by this pushing force in overcoming friction?

An person is pushing hefty a carton of mass 33.3 kg at a point of 28 degrees from he flat at a steady speed. The plentifulness of pushing power approaches 222 N. The understudy moves this carton a...
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#### what amount of energy would be produced?

A solitary bit of residue has a mass of 9.35 x 10^-10 kg. On the off chance that the mass of this bit of residue were changed over to unadulterated energy in an atomic response, a) what amount of...
more

Physics Physics B

3d

#### If the slide is frictionless, what should the person's velocity be at the bottom of the slide in meters/second?

The "Niagara Falls" water slide to waterpark and has a height of 76.0 feet (23.2 meters). Because the slide is not completely vertical the total length of the slide is 90.0 feet (27.4 meters). A...
more

Physics

3d

#### What aspect of physics was not known by the writer of this newspaper editorial that ridiculed early experiments by Robert H. Goddard on rocket propulsion above Earth’s atmosphere? “Professor Goddard.

What aspect of physics was not known by the writer of this newspaper editorial that ridiculed early experiments by Robert H. Goddard on rocket propulsion above Earth’s atmosphere? “Professor...
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