Hi!me with 9 science 90 points and !

1. what causes the weight of an object to change depending on if it is on earth or the moon?

the change in mass
the distance from the sun
the distance from earth
the acceleration due to gravity
2. the mass of a mouse is around 22 grams (0.022 kg). what is the weight of a mouse at sea level on earth?

22 g
0.022 kg
22 n
0.22 n
3. the mass of a mouse is around 22 grams (0.022 kg). what is the weight of a mouse on the moon?

0.022 n
22 g
0.035 n
0.022 kg
4. the bottom of a container has an area of 25 cm2. if 6.5 newtons of water are poured into the container, what is the pressure exerted on the bottom?

0.26 n/cm^2
3.8 n/cm^2
2.6 n/cm^2
162.5 n/cm^2
5. as a fish swims deeper into the ocean, the pressure on its body . (increases, decreases)
6. use the formula for pressure to determine the weight of a box that creates a pressure of 565 n/cm^2 when resting on a 15.0 cm^2 surface.

weight = 3.84 n
weight = 377 n
weight = 37.7 n
weight = 8,475 n
7. when pressure is applied to a liquid, it will change its but not its

shape, volume
volume, shape
shape, temperature
temperature, shape
8. select all that apply. (select all that are correct, probably more then one)

hydraulic systems work because

liquids are incompressible
pressure is transmitted equally throughout a liquid
gases are incompressible
pressure and force are the same thing
9. a hydraulic system is designed to lift cars for inspection in a service station. the narrow end of the system has a surface area of 5.00 cm^2, and the lift platform (the wide end) has a surface area of 725 cm^2. if a force of 81.0 newtons is applied to the narrow end, how much upward lift force will be exerted at the wide end?

use the following formula:

(picture below)
0.559 n
11,745 n
44.75 n
293,625 n

-

1. The weight of an object to change depending on if it is on Earth or the Moon

the acceleration due to gravity.

2. The mass of a mouse is around 22 grams (0.022 kg).

weight of a mouse at sea level on Earth = 0.022 kg x 10 m/s²

= 0.22 N

3. The mass of a mouse is around 22 grams (0.022 kg)

weight of a mouse on the Moon = 0.022 kg x 10 m/s²

= 0.035 N

4. The bottom of a container has an area of 25 cm²

6.5 newtons of water are poured into the container,

The pressure exerted on the bottom = 6.5 N /25 cm²

= 0.26 N/cm²

5. As a fish swims deeper into the ocean, the pressure on its body increases.

6. The weight of a box that creates a pressure of 565 N/cm² when resting on a 15.0 cm² surface = 565 N/cm² x 15.0 cm²

= 8475 N

7. When pressure is applied to a liquid, it will change its _shape__, but not its _volume_____

8. Hydraulic systems work because ___liquids are incompressible __.

9. A hydraulic system is designed to lift cars for inspection in a service station. The narrow end of the system has a surface area of 5.00 cm^2, and the lift platform (the wide end) has a surface area of 725 cm^2. If a force of 81.0 newtons is applied to the narrow end.

Upward lift force will be exerted at the wide end

=

= 11,745 N

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !

answer: - first one is the correct answer. .

explanations: - potassium sulfide is and cobalt(ii) chloride is .

charge on k is +1, charge on s is -2, charge on co is +2 and charge on cl is -1.

in a double replacement reaction the ion exchange takes place. in general the reaction looks like:

if one of the product is insoluble as per solubility rules then a precipitate of it is formed.

when we mix the aqueous solutions of potassium sulfide and cobalt(ii) chloride then chloride ion goes with potassium ion and sulfide ion goes with cobalt ion and the balanced equation is written as:

k and cl has equal charges, similarly co and s has equal charges and hence no subscripts are used for the product side.

as per the solubility rules, cos is insoluble and so it's precipitate is formed.

looking at the given choices, first choice is correct.