1) A force of 20 Newton acts on a bar having a cross sectional area of 0.8m^2 and length 10cm. calculate the stress developed in the bar

What effects gravitational force between objects

Would you choose to have your genome sequenced to screen for diseases

A raft is made of 10 logs lashed together. Each is 56cm in diameter and has a length of 6.1m. How many people can the raft hold before they start getting their feet wet, assuming the average person has a mass of 69 kg?

Which of the following statements about insulating materials is correct? a. Insulators can be used to increase the amount of current that can flow through a resistor without increasing its temperature. b.

True or false the electromaginic sprctrum can be descridkbed in terms of wave and energy frequency and wavelength

A spring (k = 790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is applied to stretch it? Question 3 options: 3.4 m 0.77 m 3.9 m 0.29 m

Inert gas used to make bright city lights True or False

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes

It is difficult to lift a heavy stone than the lighter one on the earth, why?