a boy pushes a box with a mass of 20kg with a force of 150N at a 45° angle towards the bottom of the x axis. Calculate the a) friction force and b) acceleration of the box. The friction coefficient with the floor is 0.2.
A box with a mass of 6.0kg is thrown on the floor, slides, and stops. If the initial velocity was 8m/s and the friction coefficient mu is 0.30, calculate the distance travelled by the box before it stopped.
A lump of gold is suspected to contain some quantity of aluminium. If the gold sample has mass 500 grams and is found to have a related entity of 5.2 find what mass of gold is present if the relative densities of gold and aluminium are respectively 19.3 and 2.6
If you have 2 oppositely charged parallel plates that is connected to the terminals of a high voltage power supply,
does that mean that the plates have been rubbed against set first for them to be charged and then connected to the power supply?
What does it mean to, I quote: "increasing the voltage of the plates" what is this voltage and how does it change the plate in any way for it to have a greater electric field strength ?
Two satellites of same mass m are revolving around earth(M) in same orbit of radius r. Rotational directions of the 2 satellites are opposite, therefore they can collide. Total mechanical energy of the system (both satellites and earth) is (m<<M) -GMm/r.
1)Does the rotation of the satellites need to be opposite?
2)What happened to the effect of one satellite on other? Won't that affect the total energy?
A particle which moves clockwise in a circle with a radius of 1.5m slows down with constant acceleration from 50m/s to 30m/s in 5.00s at t=3.00s find: 1- tangential acceleration
2- centripetal acceleration
3- the angle between the vector of velocity and acceleration
1)Does it matter that the satellites have opposite rotation?
2)What happened to the effect of one satellite on other. Won't that affect the total energy?
The expert did excellent work as usual and was extremely helpful for me.
"Assignmentexpert.com" has experienced experts and professional in the market. Thanks.