18-нұсқа

• A

• B

• C

• D

• E

What variable do Coulombs represent?

• Electrostatic Charge
• Force
• Distance
• Mass

Bernoulli’s equation is obtained by applying law of conservation of.

• Mass

• Energy

• Momentum

• Force

The electric field lines for a positive charge is always directed away from the charge. True or False?

• True

• False

If an object sinks in a fluid, _____.

• the density of the fluid is greater than the density of the object
• the density of the fluid is less than the density of the object
• the density of the fluid is equal to the density of the object
• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

Insulators are different than conductors in that insulators ____.

• do not contain electrons or protons 
•  do not contain any charge
• have a weaker affinity for electrons 
• do not allow charge to freely move 

According to equation of continuity, A₁V₁ = A₂V₂ = constant. The constant is equal to:

• Flow rate

• Volume of fluid

• Mass of fluid

• Density of fluid

• A

• B

• C

• D

• E

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

A small car and a large truck collide head-on and stick together. Which one has the larger momentum change?

• the car

• the truck

• they both have the same momentum change