371 Answered Questions for the topic physics B

10/02/21

Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1250 kg .
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10/02/21

Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1250 kg .
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Physics B Physics Physics C

10/01/21

projectile motion ( pls help me)

An object is projected with a speed of 28.0 m/s at an angle of 60 degrees to the horizontal.(b) Determine1.   The time taken to reach the greatest height.2.   The greatest height reached.
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09/29/21

Describe the motion of the marble. Be sure to explain fully, addressing the relevant underlying material.
A spring loaded cannon on wheels is traveling along a flat track at constant speed. It shoots a marble directly upward into the air. Describe the motion of the marble. Be sure to explain fully,... more
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Physics B Physics Physics C

09/29/21

Which object will hit the ground first, the one projected horizontally or the one dropped?
At the instant a horizontally projected object is launched, an identical object is dropped. Which object will hit the ground first, the one projected horizontally or the one dropped? Be sure to... more
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Physics B Chemistry Physics

09/29/21

physic question what is the energy difference between these two energy levels in Joules?
If one energy level is at -3.30 eV and the next one is at -8.10 eV, what is the energydifference between these two energy levels in Joules?
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Physics B Physics Physics C

09/27/21

Please help!!!!!!!!!!!!!!!!!!!
Exactly 3.3 s after a projectile is fired into the air from the ground, it is observed to have a velocity v⃗ = (8.9 i^ + 4.7 j^)m/s, where the x axis is horizontal and the y axis is positive... more
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09/26/21

“An object that was thrown upward is not a free fall” Do you agree on this statement? Explain your answer.
“An object that was thrown upward is not a free fall” Do you agree on this statement? Explain your answer.
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09/19/21

Physics question about resistors
You are given six resistors each of value 10 ohms, how will you connect them to give a total of 10 ohms? I need this to draw a circuit diagram of this arrangement but am unable to figure it out.
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Physics B Physics Physics C

09/19/21

Please help ((( correct answers only ))))
The position of a particular particle as a function of time is given by r⃗ = ( 9.60ti^ + 8.85j^ - 1.00t2k^)m, where t is in seconds.Part ADetermine the particle's velocity as a function of time.... more
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Physics B Physics Physics C

09/16/21

The position of a particular particle as a function of time is given by r⃗ = ( 9.60ti^ + 8.85j^ - 1.00t2k^)m, where t is in seconds.
Part ADetermine the particle's velocity as a function of time. Express your answer in terms of the unit vectors i^, j^, and k^.v⃗ = _________ m/sPart BDetermine the particle's acceleration as a... more
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Physics B Physics Physics C

09/15/21

A ball is thrown horizontally from the roof of a building 8.6 m tall and lands 9.5 m from the base.
What was the ball's initial speed?Express your answer using two significant figures.v0 = _________ m/s
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Physics B Physics Physics C

09/15/21

A shot-putter throws the shot ( mass = 7.3 kg) with an initial speed of 14.0 m/s at a 33.0 ∘ angle to the horizontal.
Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 1.80 m above the ground.Δx =
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Physics B Physics Physics C

09/15/21

A baseball is hit with a speed of 27.0 m/s at an angle of 45.0 ∘ . It lands on the flat roof of a 12.0 m -tall nearby building.
If the ball was hit when it was 1.5 m above the ground, what horizontal distance does it travel before it lands on the building?Express your answer using two significant figures.Δx = ... more
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Physics B Physics Physics C

09/15/21

A diver running 2.2 m/s drives out horizontally from the edge of a vertical cliff and 2.7 s later reaches the water below.
Part A How high was the cliff ?Express your answer using two significant figures.Part B How far from its base did the diver hit the water?Express your answer using two significant figures.
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Physics B Physics

08/27/21

Slove the question step by step.And send the picture of the question in mail.
A 7.5 g bullet moving at 120 m/s strikes a thick wall. Assume that the bulletundergoes a uniform deceleration and stops after penetrating 6 cm. Find(a) The time taken by the bullet to stop.(b) The... more
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Physics B Physics

08/27/21

Slove the math step by step and send the slove pic in the meassge.
A stone with a weight of 4.25 N is launched vertically from ground level with aninitial speed of 18 m/s and the air drag on it is 0.25 N throughout the flight.(a) Find the maximum height reached... more
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07/30/21

Youngs double slit Experiment
The following apparatus is used to investigate the light interference using a double slit. The distance, y, between the slits and the screen can be adjusted. The slit width, S, can also be... more
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07/30/21

Photoelectric effect
When light of sufficient energy hits the cathode, photoelectron are ejected towards the anode. A voltage can be applied so that no current is measured at the ammeter. This is known as stopping... more
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Physics B Physics Physics C

07/27/21

Problem Solving
1. A fluid system has a temperature of 83oF. What is its temperature expressed in Kelvin?2. A Celsius and Fahrenheit thermometer are used to measure the temperature of a certain substance. If the... more
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Physics B Physics Physics C

07/14/21

Standing Waves Question
A stretched spring is fixed at both ends. Students wiggle the string. They discover that at one frequency, they can create a standing wave with a wavelength of 𝜆A = 0.7000 m. At a different... more
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Physics B Physics Physics C

07/14/21

slove the math step by step with formula
A projectile is fired at an angle 30 ° from a gun that is 45 m above the flat ground, emerging from the gun with a speed of 300 m/s. (a) How long does the projectile remain in air? (b) At what... more
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Physics B Physics Physics C

07/13/21

Slove the question step by step.
If two resistors R1 and R2 are connected in parallel, the equivalent resistance becomes 𝑅𝑒𝑞 = 𝑅1.𝑅2/𝑅1+𝑅2 . If 𝑅1 = 22.0 Ω ± 1.1 Ω 𝑎𝑛𝑑 𝑅2 = 47.0 ± 4.7 Ω, find the percentage error in the... more
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Physics B Physics

07/12/21

Slove the math step by step
A rock is dropped from a 200 m –high cliff. How long does it take to fall (a) the first 100 m and (b) the last 50 m.
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06/02/21

Electricity, resistance, current, voltage, physics
a circuit operates at 1000 watts, within the circuit we have a 10 ohm, 20 ohm, and 40 ohm resistors.a) if the resistors are connected in parallel, what would their equivalent resistance be? b)... more
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