A person of mass m stands on a rope ladder that is hanging from a freely floating balloon of mass M. The balloon is initially at rest with respect to the ground. (The buoyant force on the person-balloon...
A person of mass m stands on a rope ladder that is hanging from a freely floating balloon of mass M. The balloon is initially at rest with respect to the ground. (The buoyant force on the person-balloon...
A straight wire of 120 cm carries directional current of 0.25A.If the space is affected by magnetic field of 0.5T that perpendicular to the current,thus the magnitude of Lorentz force of the wire...
A room of 1.5 litres contains gas with pressure 10^5 Pa.If the gas particle has average speed of 750 m/s,then gas mass that trapped in the room is...gram A.0.8 B.0.7 C.0.6 D.0...
A straight wire of 120 cm carries directional current of 0.25A.If the space is affected by magnetic field of 0.5T that perpendicular to the current,thus the magnitude of Lorentz force of the wire...
A room of 1.5 litres contains gas with pressure 10^5 Pa.If the gas particle has average speed of 750 m/s,then gas mass that trapped in the room is...gram A.0.8 B.0.7 C.0.6 D.0...
A straight wire of 120 cm carries directional current of 0.25A.If the space is affected by magnetic field of 0.5T that perpendicular to the current,thus the magnitude of Lorentz force of the wire...
A car moves with velocity v and it decreases to 1/3 after a distance x because the car's braked.The distance taken from the start until the car stop is...x A.8/9 B.9/8 C.8/10 D...
Magnetic flux produced by magnetic filed B that through perpendicularly a surface of width A is P.If the magnetic field is reduced into B/2,but the width surface enlarged to 2A,then flux produced...
1.A room of 1.5 litres contains gas with pressure 10^5 Pa.If the gas particle has average speed of 750 m/s,then gas mass that trapped in the room is...gram A.0.8 B.0.7 C.0.6 D...
A 0.500 kg sphere moving with a velocity (2.00 - 2.60 + 1.00) m/s strikes another sphere of mass 1.50 kg moving with a velocity (-1.00 + 2.00 - 3.00) m/s. (a) If the velocity of the 0.500...
Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
A small car with a mass of 800 kg travels northward at 26 m/s. Does the car have more or less momentum than a truck with a mass of 12500 kg traveling eastward at 19 m/s? How...
A boat is moving due east where the earths magnetic field is 5.0 X (10 ^-5 ) N/Am due north and horizontal . The boat carries a vertical aerial 2 metres long. if the speed of the boat is 1.5 m/s...
Two light circuits with identical lightbulbs. One has two lightbulbs in parallel. Other has them in series. Student 1 says series will glow brighter cuz the same current goes to both lightbulbs...
1.A waterfall of 8m with water debit 10 m^3/s used to turn a micro-electrical generator.If 10% of the energy transformed to electricity and g=10 m/s^2,the the output power is...kW A.70 B...
The question is: An object begins to move along the y axis and its position is given by the equation y = 5t2 − 3t − 2, with y in meters and t in seconds. (Express your answer in vector form.) a...
I have the correct answer for a but I'm still hazy on how I got there. For part b, I'm tol A massive black hole is believed to exist at the center of our galaxy (and most other spiral...
1.A waterfall of 8m with water debit 10 m^3/s used to turn a micro-electrical generator.If 10% of the energy transformed to electricity and g=10 m/s^2,the the output power is...kW A.70 B...
I'm having trouble identifying all of the components of this problem. I don't understand how the initial position can be defined by so many different angles. An aircraft flies...
What happens to the force between two magnets when the distance between the two doubles.the force equals 5 newtons.I dont know the distance.