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4 years ago

Four students are carrying out different laboratory procedures.

Physics

2 answers:

Firlakuza [10]4 years ago

7 0

Answer: Option (b) is the correct answer.

Explanation:

Convection is defined as a process in which a fluid is heated an hotter material (less dense) rises at the top whereas cooler material (more dense) sinks at the bottom. This movement of material causes transfer of heat between the materials.

For example, when Jason is heating salt water over a burner until the water evaporates.

Thus, we can conclude that Jason’s experiment relies on convection.

leva [86]4 years ago

3 0

B. Jason's experiment

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Raquel says, “I just saw an ad that has my favorite song and my favorite colors. It’s for the new theme park in town. I love the

NNADVOKAT [17]

Answer:

C. Targets

Explanation:

Because the Ad for the theme park effectively caught Raquel's attention, a businessperson would say that the ad accurately targeted Raquel. Marketers use specific colors, themes, designs, songs, etc to target a specific audience.

4 0

2 years ago

A 770 n man stands in the middle of a frozen pond of radius 10.0 m. he is unable to get to the other side because of a lack of f

oksano4ka [1.4K]

Momentum is conserved throughout this scenario.

Before the man does anything, the total momentum of him and his book is zero. So we know that it'll be zero after he throws the book.

Momentum = (mass) x (velocity)

The man gives the book (1.2 kg)x(10 m/s north) = 12 kg-m/s north
of momentum.

Since the total momentum must be zero, the man himself picks up 120 kg-m/s of momentum south.

(his mass)x(his v) = 120 kg-m/s south = (770 kg-m/s^2/9.8 m/s^2)x(V).

His velocity southward = (120 x 9.8) / (770) m/s .

He needs to reach the shore 10m away.

Time = distance/speed

= (10 x 770) / (120 x 9.8) seconds

= 6.55 seconds

3 0

3 years ago

heeelllllpppp plleeeaaassseee

Verdich [7]

$\underbrace{\sf{Elementary~ charge} }$

Explanation:

We call the magnitude of the charge of an electron as ELEMENTARY CHARGE.

6 0

3 years ago

Read 2 more answers

What kind of creatures/beings are tieflings?

Nuetrik [128]

Answer:

Tieflings are classed as humanoids, not fiends (and technically it appears to be a bloodline curse, not even having any fiendish blood). Note that being classed as a fiend would also mean the character would be immune to spells that target humanoids, such as Hold Person.

Explanation:

-Hope this Helps

PLS MARK ME BRAINLIEST

(pressing the crown button underneath)

thx

4 0

2 years ago

A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surfac

frutty [35]

Answer:

Velocity=1.1m/s

Amplitude=0.35m

Explanation:

Given:

time 't' = 2.9s

wavelength 'λ'= 5.5m

distance 'd'=0.7m

The time period 't' is the time b/w two successive waves. Therefore, the time it takes from the boat to travel from its highest point to its lowest is a half period.

So, T = 2 x 2.9 => 5.8 s

As we know that frequency is the reciprocal of time period, we have

f= 1/T = 1/5.8 =>0.2 Hz

In order to find how fast are the waves traveling, the velocity is given by

Velocity = f λ

V= 0.2 x 5.5 =>1.1m/s

The distance between the boat's highest point to its lowest point is double the amplitude.

Therefore , we can write

Amplitude 'A'= d/2 =>0.7/2 =>0.35m

8 0

3 years ago