1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anastassius [24]
3 years ago
5

Kate is testing whether caffeine affect your heart rate independent variable or dependent variable

Physics
1 answer:
Bumek [7]3 years ago
4 0
She is testing independent variable
You might be interested in
A rotating light is located 13 feet from a wall. The light completes one rotation every 3 seconds. Find the rate at which the li
saveliy_v [14]

Answer:

29.2 ft/s

Explanation:

The distance of the light's projection on the wall

y = 13 tan θ

where θ is the light's angle from perpendicular to the wall.

The light completes one rotation every 3 seconds, that is, 2π in 3 seconds,

Angular speed = w = (2π/3)

w = (θ/t)

θ = wt = (2πt/3)

(dθ/dt) = (2π/3)

y = 13 tan θ

(dy/dt) = 13 sec² θ (dθ/dt)

(dy/dt) = 13 sec² θ (2π/3)

(dy/dt) = (26π/3) sec² θ

when θ = 15°

(dy/dt) = (26π/3) sec² (15°)

(dy/dt) = 29.2 ft/s

5 0
3 years ago
A compressor receives air at 290 K, 100 kPa and a shaft work of 5.5 kW from a gasoline engine. It is to deliver a mass flow rate
Sladkaya [172]

Answer:

P_2=4091\ KPa

Explanation:

Given that

T₁ = 290 K

P₁ = 100 KPa

Power P =5.5 KW

mass flow rate

\dot{m}= 0.01\ kg/s

Lets take the exit temperature = T₂

We know that

P=\dot{m}\ C_p (T_2-T_1)

5.5=0.01\times 1.005(T_2-290})\\T_2=\dfrac{5.5}{0.01\times 1.005}+290\ K\\\\T_2=837.26\ K

If we assume that process inside the compressor is adiabatic then we can say that

\dfrac{T_2}{T_1}=\left(\dfrac{P_2}{P_1}\right)^{0.285}

\dfrac{837.26}{290}=\left(\dfrac{P_2}{100}\right)^{0.285}\\2.88=\left(\dfrac{P_2}{100}\right)^{0.285}\\

2.88^{\frac{1}{0.285}}=\dfrac{P_2}{100}

P_2=40.91\times 100 \ KPa

P_2=4091\ KPa

That is why the exit pressure will be 4091 KPa.

4 0
3 years ago
13. Which of the following is considered to be a vector?
kompoz [17]
B velocity hope it helps
8 0
3 years ago
Read 2 more answers
What causes the phenomena?
Murrr4er [49]

Answer:

Most pneumonia occurs when a breakdown in your body's natural defenses allows germs to invade and multiply within your lungs.

Explanation:

7 0
3 years ago
¿que aceleracion producira una fuerza neta de 250N a un objeto de 20kg?
vesna_86 [32]

Answer:

can you switch up your language please

3 0
3 years ago
Other questions:
  • The San Andreas fault is a great example of a zone where _____ metamorphism is occurring.
    9·2 answers
  • The most common type of lighting unit utilized in street lighting is:
    15·1 answer
  • If there is gravity on earth than why don't the birds and clouds fall down? ​
    7·2 answers
  • What s the rate of acceleration of gravity?​
    6·2 answers
  • A laser printer uses a laser beam to “burn” images onto paper.<br><br> a)True<br> b)False
    12·2 answers
  • How much charge must pass by a point in a wire in 1.5 s for the current inb the wire to be 2.0 A?
    14·1 answer
  • A car, a bicycle, a bus, and a motorcycle are moving parallel to each other on a road. Each vehicle is traveling at the same spe
    14·1 answer
  • Example of competition on North Island<br><br> Help me plz 10 points
    12·1 answer
  • A soccer ball is released from rest at the top of a grassy incline. After 6.2 seconds, the ball travels 47 meters. One second la
    14·1 answer
  • The tendency of an object to resist a change in its motion is called
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!