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A 12N bag is hanging with a cord. How much is the least tension exerted by the cord to stay the bag at rest?
a. 1.2N c. 2.1N
b. 21.8N d. 12N
An elevator cab that weighs 27.8 kN moves upward. What is the tension in the cable if the cab’s speed is ___.
Find the mass of the elevator:
a. At rest
b. Uniform motion
a. Increasing at a rate of 1.2m/s2
b. Decreasing at the rate of 1.2m/s2
1. A rock is dropped from a height of 1.6 meters. How fast is the rock falling just before it hits the ground?
Determine the lateral magnification of an object with a distance equal to 186 cm if the image’s distance is observed to be equal to 27.4 cm, considering that both are relative from the vertex.
2. What is the image description of a 3 cm tall pen light when placed at distance of 30.5 cm, from a converging lens having a focal length of 10.2 cm?
how did the size of the current in the coil affect the strength of the electromagnet
A uniform electric field of magnitude E = 38 N/C points along the x-axis. A circular loop of radius R = 26 cm is centered at the origin with the normal to the loop pointing θ = 45 degrees above the x-axis.
Calculate the electric flux in units of N⋅m2/C that passes through the loop.
Assuming the bus in question 3 does not change its cruising speed on its way down, where does the gravitational potential energy go? Why is there a risk of brake failure in this situation?
Three point charges are located it the positive x-axis of a coordinate system. Positive point charge 𝒒𝟏 = 5 𝑛𝐶 and negative point charge 𝒒𝟐 = −10 𝑛𝐶, are located 3 cm and 5 cm from the origin respectively. Determine the total force of another point charge 𝑸 = −𝟏 𝝁𝑪 at the origin due to the other two chargers.
An object with mass of 15kg is pushed along a horizontal surface ,a distance of 10m to point Q eastwards by constant of 128N the coefficient of kinetic friction between the object and the surface is 0,55 draw a force diagram showing all the force acting on the 15kg
