if you put something like a piece of cardboard between a magnet and an iron nail the magnets to hold the nail in place even though the magnet is not touching the nail explain how that happens

What two bodily functions are increased by a warm up

why does a bicycle fitted with solid tyres give a bumper ride than on which has air fitted tyres

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Why is the land significantly cooler at night when compared to the ocean?

When a third object is brought in contact with the first object (after it gains the electrons), the resulting charge on the third object is 0.9 C. What was its initial charge (in C) ?

A small rock remains at rest in outer space while an astronaut pushes horizontally on it with a force of 20 N. Which of the following must be true? A. There is another horizontal force acting on the rock. B.

If an igneous rock has very large crystals of minerals that you can see when looking at it, which type of igneous rock is it

You have a 60-foot roll of fencing and a large field. You want to make two paddocks by continuing the fencing down the middle of a rectangular enclosure. What are the dimensions of the largest such enclosure you can make?

Crystallization is a separation technique used to produce rock candy from a sugar solution. true or false

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2