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san4es73 [151]
3 years ago
7

Help = brainlist pls

Physics
1 answer:
Ksivusya [100]3 years ago
4 0

Answer:

A) the liquid particals move slower

Explanation:

vapor has a higher temp and have more energy than liquid so it's not c or d. and liquid has a lower boiling point than vapor

You might be interested in
How much heat would be needed to completely evaporate 31.5 g of boiling water at a temperature of 100 "C? Express your answer in
BaLLatris [955]

Answer:

Heat needed = 71.19 J

Explanation:

Here heat required can be calculated by the formula

            H = mL

M is the mass of water and L is the latent heat of vaporization.

Mass of water, m = 31.5 g = 0.0315 kg

Latent heat of vaporization of water = 2260 kJ/kg

Substituting

            H = mL = 0.0315 x 2260 = 71.19 kJ

Heat needed = 71.19 J

7 0
3 years ago
an object is thrown horizontally off a cliff with an initial velocity of 5.0 meters per second. the object strikes the ground 3.
Olegator [25]
You know that the formula for finding horizontal displacement is; 

s=uₓt 
s=(5 m/s)(3s) 
s=15 m

Therefore, the ball travelled 15 m. 

Hope I helped :) 

7 0
3 years ago
Read 2 more answers
What is the weigh in newtons of an automobile with a mass of 1800 kg?​
Allushta [10]

Answer:

The weight of an automobile, W = 17640 N

Explanation:

Given that,

The mass of an automobile, m = 1800 Kg

The weight of an object is represented as the gravitational force acting on an object of mass 'm'. It given by the formula

                                   W = m x g   newton

Where,

                  g - acceleration due to gravity.

Substituting the given values in the above equation

                                   W = 1800 Kg x 9.8 m/s²

                                       = 17640 N

Hence, the weight of the automobile, W = 17640 N

8 0
4 years ago
There is a 247–m–high cliff at Half Dome in Yosemite National Park in California. Suppose a boulder breaks loose from the top of
Cerrena [4.2K]

Answer:

Vf = 69.61 m/s

Explanation:

We will use the third equation of motion to solve this problem:

2gh = V_{f}^2 - V_{i}^2\\

where,

g = acceleration due to gravity = 9.81 m/s²

h = height of cliff = 247 m

Vf = final velocity = ?

Vi = initial velocity = 0 m/s (boulder breaks loose from rest)

Therefore,

(2)(9.81\ m/s^2)(247\ m) = V_{f}^2 - (0\ m/s)^2\\V_{f} = \sqrt{4846.14\ m^2/s^2}\\

<u>Vf = 69.61 m/s</u>

8 0
3 years ago
Which of the following solar oven design materials would serve to conduct heat to maximize thermal energy in the s'more?
beks73 [17]

Answer:

The correct option is;

3. layers of cotton lining the interior

Explanation:

In the procedure for making a solar oven it is essential place the inside portion of the carboard flap be made that the air made hot by the heat of the Sun does is not removed from the oven as convection current, and to provide insulation that limits heat loss by thermal radiation as well as conduction to cooler surfaces.

5 0
4 years ago
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