What are the things ships tie up to at dock?

What is the mass of an object if the force of 17 n causes it to accelerate at 1.5 m/s/s?

nikklg [1K]

newton's second law results in force = mass times acceleration

17 = mass x 1.5

mass = 17/1.5

=17/3x2 = just under 12

3 0

3 years ago

Which of these is an example of physical change?

Vsevolod [243]

I believe a physical change is one where the physical makeup of a substance is altered as opposed to a chemical change or molecular one which happens on a smaller scale. This would make me think that B. metal denting is accurate since all the other options are examples of chemical or molecular changes. A is an example of a liquid turning into a gas, which is a molecular change. The other two are chemical changes. Hope this is correct.

7 0

3 years ago

Read 2 more answers

If you had 8 balls and 7 of them were a certain weight, and 1 of them was heavier, how could you find the heaviest ball. All the

dybincka [34]

Answer:

There are two method of comparing the balls 1) using a balance 2) by only 2 weighings.

Explanation:

There are two method of comparing the balls 1) using a balance 2) by only 2 weighings.

Make the following groups - --- (1,2,3),(4,5,6),(7,8)

Step 1. compare the Weigh (1,2,3) and (4,5,6)

there are 2 possible outcomes:

1---both the group are of same weight. and named as (Case A)

2--- one of the group is heavier than other and named as (Case B)

Step 2. Let examine both case

In Case A --in this case, now compare the weight of 7th and 8th ball. By this you have recognize the heavier ball by 2 weighing method.

In Case B -- considered the heaviest group (assume group (1,2,3) is heavy), from this group take randomly two ball and compare the their weight. out of these two ball, one is heavy else the third ball is.

7 0

3 years ago

The Law of Conservation of Momentum states that Momentum between two moving

Misha Larkins [42]

Answer:

As stated, the momentum of the system is conserved during the collision (even the kinetic energy is not - some energy is lost to heat, deformation, etc)

M1 V1 = M2 V2 expresses momentum conservation

150 kg-m/s = (40 + X) kg-m/s

X = 110 kg-m/s is the new momentum of the front car

More specifically,

M1 V1 + M2 V2 = M1 V1' + M2 V2'

3 0

2 years ago

The block in the drawing has dimensions L0×2L0×3L0,where L0 =0.5 m. The block has a thermal conductivity of 200 J/(s·m·C˚). In d

Dennis_Churaev [7]

Answer:

$Q_p=18000\ J$