367 Answered Questions for the topic physics B

06/03/22

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively.

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively. a. What is the speed of light in this material? b. What is the value of the magnetic... more

05/31/22

Please help me understand

Can you explain or give an example of why the frequency of light does not change upon reflection
Physics B Math Science Physics

05/21/22

Asteroid split lab

Background: The two tables below contain both the assumptions and parameters needed to evaluate if the plucky heroes in Armageddon could save Earth. In order to miss, Earth two conditions must... more
Physics B Physics Physics C

05/17/22

In a roundabout (or traffic circle), cars go around a 24- m -diameter circle.

In a roundabout (or traffic circle), cars go around a 24- m -diameter circle.If a car's tires will skid when the car experiences a centripetal acceleration greater than 0.60g , what is the maximum... more
Physics B Physics Physics C

05/17/22

A wildlife researcher is tracking a flock of geese. The geese fly 5.0 km due west, then turn toward the north by 45 ∘ and fly another 3.5 km .

A wildlife researcher is tracking a flock of geese. The geese fly 5.0 km due west, then turn toward the north by 45 ∘ and fly another 3.5 km .How far west are they of their initial position?What is... more
Physics B Physics Physics C

05/17/22

A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 11 ∘ incline. His speed at the bottom is 15 m/s .

A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 11 ∘ incline. His speed at the bottom is 15 m/s .What is the length of the incline?How long does it... more

04/20/22

Calculate the magnitude and direction of the resultant electric field at the origin due to these charges

A point charge 𝑞1 = +6.00 𝑥 10−9𝐶 is at the point 𝑥 = 0.800 𝑚, 𝑦 = 0.600 𝑚 and a second point charge 𝑞2 = −2.00 𝑥 10−9𝐶 is at the point 𝑥 = 0.800 𝑚, 𝑦 = 0 𝑚. Calculate the magnitude and direction... more
Physics B Math Science Physics

04/18/22

Physics 2: Interference Problem Please Help

An oil film ( n= 1.46) floats on a water puddle. You notice that green light  (520 nm ) is absent in the reflection. What is the minimum thickness of the oil film?I used the destructive... more
Physics B Math Science Physics

04/18/22

Physics Constructive Interference- Please Help

A soap film (n=1.33) is 765 nm thick. White light strikes the film at normal incidence.What visible wavelengths will be constructively reflected if the film is surrounded by air on both sides?
Physics B Physics Physics C

04/06/22

capacitor question

The charge stored on each plate of a capacitor is 120 μC when it is connected to a source with a potential difference of 6.0 V. (a) What is the capacitance of the capacitor?(b) What is the... more
Physics B Physics Physics C

04/02/22

gauss law physics 2

a uniform electric field e=15000 n/c passing through a flat square A = 2 m2. determine the electric flux
Physics B Math Science Calculus

04/02/22

Physics Help Please- Lens

The actual light sensor size of a digital camera is 14.9 mm X 22.3 mm. You want to take a photograph of your friend, who is 2.0m tall. Your camera has a 50mm-focal-length lens. How far from the... more
Physics B Math Science Physics

04/01/22

Physics Thin Lens Equation Help Please

The actual light sensor size of a digital camera is 14.9 mm X 22.3 mm. You want to take a photograph of your friend, who is 2.0m tall. Your camera has a 50mm-focal-length lens. How far from the... more
Physics B Math Science Physics

03/30/22

Help needed with physics

A 1200 kg safe is 2.4 m above a spring when the rope holding the safe breaks. The safe hits the spring and compresses it 42 cm. What is the spring constant of the spring?
Physics B Math Science Physics

03/30/22

Help with physics question

A system in which only one particle can move has the potential energy shown in the figure. Suppose U1 = 92 J. What is the y -component of the force on the particle at y = 0.5 m ? What is the ... more
Physics B Math Science Physics

03/30/22

Help needed with physics question

A 58.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.70 m. What speed does he need at the bottom?Any help... more
Physics B Math Science Physics

03/26/22

Physics Concave lens Question Help please

An object is located to the left of a concave lens whose focal length is -35 cm. The magnification produced by the lens is m1 = 0.36.A. To decrease the magnification to  m2= 0.23, should the object... more

03/14/22

Ideal Gas Equation Help!

A house has a volume of 1.45 x 10^4 cubic meters. At 20.0°C and 740 mm Hg, the air fills the house. If the temperature and pressure increases to 35.0°C and 780 mm Hg, how much air must be drawn... more

03/13/22

Ideal Gas Equation Help

A house has a volume of 1.45 x 10^4 cubic meters. At 20.0°C and 740 mm Hg, the air fills the house. If the temperature and pressure increases to 35.0°C and 780 mm Hg, how much air must be drawn... more
Physics B Physics Physics C

02/28/22

What are the components of a pendulum's acceleration vector?

What are the components of the acceleration vector of a pendulum?a) ax = 0, ay > 0b) ax > 0, ay > 0c) ax < 0, aY > 0

02/18/22

Does these violate Newton's third law?

A 50 KG brick is put on a glass table glass. Action force and reaction force are not the same and the glass breaks because a glass's opposing force will never equal the heavier brick. So in... more
Physics B Math Physics Physics 2

02/17/22

Current Question (Physics Help Please)

A television set connected to a 120 V  outlet consumes 21W of power. A. How much current flows through the television? B. How long does it take for 10 million electrons to pass through the TV?For... more
Physics B Math Science Physics

02/17/22

Magnetic field PHYSICS HELP PLEASE!

A 0.40 uC particle moves with a speed of 16 m/s  through a region where the magnetic field has a strength of 0.99 T. a.   At what angle to the field is the particle moving if the force exerted on... more
Physics B Math Science Physics

02/07/22

Physics Electric Potential Energy Please Help

A uniform electric field of magnitude 7.8×105  N/C points in the positive x direction. Find the change in electric potential energy of a 4.5 uC charge as it moves from the origin to the point... more

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