You buy a bag of crisps in an airport. After take-off you take the crisps out of your rucksack. Explain in detail why the bag has expanded?

What is the definition of a neutron?

If an element has 3 electrons how many of them will be in the second energy level?

True or False The theory of plate tectonics explains how the Earths core moves and why earthquakes and volcanoes occur?

A 68 kgkg driver gets into an empty taptap to start the day's work. The springs compress 2.1*10-2 mm. What is the effective spring constant of the spring system in the taptap?

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. calculate the kinetic energy of this block

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

What is the formula for calculating the mass when i have the number of volume and density

What is the name for potential difference that causes current to flow? (A) electric charge (B) static discharge (C) voltage

How is a herpetologist and a ecologist similar

In an oscillating lc circuit, when 75.0% of the total energy is stored in the inductor's magnetic field, (a) what multiple of the maximum charge is on the capacitor and (b) what multiple of the maximum current is in the inductor?