PHYSICS
COLLEGE

2) In the previous situation, what is the frictional force the truck exerts on the box?

3) What is the maximum acceleration the truck can have before the box begins to slide?

4) Now the acceleration of the truck remains at that value, and the box begins to slide. What is the acceleration of the box?

5) With the box still on the truck, the truck attains its maximum velocity. As the truck comes to a stop at the next stop light, what is the magnitude of the maximum deceleration the truck can have without the box sliding?

Answer:

Answer:

1) 1.31 m/s2

2) 20.92 N

3) 8.53 m/s2

4) 1.76 m/s2

5) -8.53 m/s2

Explanation:

1) As the box does not slide, the acceleration of the box (relative to ground) is the same as acceleration of the truck, which goes from 0 to 17m/s in 13 s

2)According to Newton 2nd law, the static frictional force that acting on the box (so it goes along with the truck), is the product of its mass and acceleration

3) Let g = 9.81 m/s2. The maximum static friction that can hold the box is the product of its static coefficient and the normal force.

So the maximum acceleration on the block is

4)As the box slides, it is now subjected to kinetic friction, which is

So if the acceleration of the truck it at the point where the box starts to slide, the force that acting on it must be at 136.6 N too. So the horizontal net force would be 136.6 - 108.3 = 28.25N. And the acceleration is

28.25 / 16 = 1.76 m/s2

5) Same as number 3), the maximum deceleration the truck can have without the box sliding is -8.53 m/s2

HIGH SCHOOL

The total potential and kinetic energy of all the microscopic particles in an object make up its a. nuclear energy.

b. thermal energy.

c. electric energy.

d. chemical energy.

It makes up B. thermal energy

HIGH SCHOOL

A carbohydrate that gives two molecules when it is completely hydrolyzed is known as a

Answer:

The answer to your question is disaccharides

Explanation:

Data

Carbohydrates are classified as:

Monosaccharides: are only formed by one molecule of polyhydroxy aldehydic or ketonic unit.

Disaccharides: are sugars formed by 2 units of monosaccharides

Oligosaccharides: are formed by 2 to 20 units of monosaccharides

Polysaccharides are polymers of 20 or more units of monosaccharides

HIGH SCHOOL

Continental crust is typically 35 km thick but may be up to __________ thick under mountain ranges.

70 km is the answer for that question

COLLEGE

Replication of a research study is most likely to be made easier by

Replication is vital to science. It helps make science a self-correcting system. Any time a result is surprising, researchers will try to replicate it, to see if the phenomenon is dependable or just a fluke (a one-time occurence). Operational definitions are critically important in aiding replication.