13/28 x 100% =46.4%(corr. to 3 sig. fig.) (we usually correct to 3 significant figure if we see long decimals)
I assume you and your friends share the pizza equally and no other people are going to share the pizza. Each one will get = 3 1/8 divided by 5 = 5/8
Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of -1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B, how much charge must it...
Introduction to Physical Science
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?)
An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?
An iorn rod (a=11.8 x 10^-6C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?
thanks simon76 :)
Anyone have any idea for q2_2_1 Q2_2_3 Q2_2_5 Appreciate your help. Thanks :)
2_1_3 is wrong