Which of the following is an example of an object that could have a net force greater than zero acting on it?A. a glass resting on a table
B. a ball rolling down a ramp
C. a ladder leaning against a wall
D. a toy car moving east at a constant velocity

Answers

Answer 1

Answer: Net force is basically the force an object has when changing direction, so the answer would be D.

Answer 2

Answer: An object could have a net force greater than zero acting on it is a toy car moving east at a constant velocity because of the direction it moves.

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Which of the following conditions creates the largest waves? A. slow-moving wind over smooth water B. slow-moving wind over choppy water C. fast-moving wind over smooth water D. fast-moving wind over choppy water
Nuclear fusion occurs in stars. a. True b. False
A) A block of mass, m, is pushed up against a spring, compressing it a distance x, and is then released. The spring projects the block along a frictionless horizontal surface, giving the block a speed v. The same spring projects a second block of mass 4m, giving it a speed 3v. What distance was the spring compressed in the second case?B) Initially a body moves in one direction and has kinetic energy K. Then it moves in the opposite direction with three times its initial speed. What is the kinetic energy now?

When a covalent or an ionic bond is formed a chemical change has occurred. Which of these is not associated with a chemical change?A) The atoms of the substance produced have been rearranged.
B) The substances produced are identical to the substances that reacted except that they're isomers.
C) The total mass of the reacting substances is the same as the total mass of the substance produced by the reaction.
D) The chemical properties of the substances produced by the reaction are different from those of the reacting substances.

Answers

Answer: B) The substances produced are identical to the substances that reacted except that they're isomers.

Explanation: Chemical change is a change in which atoms of the reactants are rearranged ,thus leading to formation of new products.

The new substances formed are different compounds from the original reactants and thus they have different properties.

$2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)$

This is an example of chemical reaction in which the bond between chlorine molecule is broken and a new bond between sodium and chlorine gets formed.

$NaCl$ formed is an ionic compound whereas chlorine is a covalent compound and sodium is a metal.

The answer is B). The total mass and the atom numbers of reacts and products are the same in the reaction. But that does not mean the production are identical to the reactants.

Electrical resistance is measured ina.
volts.
b.
joules.
c.
watts.
d.
amperes.
e.
none of the above

Answers

Resistance is the ratio of

(voltage between two points in the circuit)
divided by
(current between the same points).

It's expressed in units of Ohms, so the correct choice is "none of the above".

It's e. none of the above because electrical resistance is measured in ohms.

What did the martian say when he accidentally landed on venus answers?

Answers

I didn't planets this way. the martian say when he accidentally

The statement made by the martian when he accidentally landed on Venus was that "I didn't planet (plan) it this way".

The question simply relates to a riddle. A riddle simply means a statement, phrase, or question that has a double or veiled meaning that is put forth as a puzzle to be solved by others.

It should be noted that the statement made by the martian when he accidentally landed on Venus was that "I didn't planet (plan) it this way".

Read related link on:

brainly.com/question/12350717

What is a scientific paradigm

Answers

a scientific paradigm is is a distinct set of concepts or thought patterns, including theories, research methods, postulates, and standards for what constitutes legitimate contributions to a field.

A true hero is the unifying force in the diverse society

Answers

This indeed is true, a hero is someone who can against very bad odds unify a country that can be torn or just be generally very heterogenous. There have been many cases of such heroes in the past where they would unify a certain country or society under the same banner.

For a winter fair, some students decide to build 30.0 kg wooden pull carts on sled skids. If two 90.0 kg passengers get in, how much force will the puller have to exert to move a pull cart? The coefficient of maximum static friction between the sled skids and the road is 0.15