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
muminat
3 years ago
7

CHECK MY WORK

Physics
1 answer:
Zina [86]3 years ago
3 0
I believe you are right. pH is the concentration of H+. Therefore the more acidic the more H+.
You might be interested in
A mass is tied to a string and swung in a horizontal circle with a constant angular speed. show answer No Attempt If this speed
Liono4ka [1.6K]

Answer:

The tension in the string is quadrupled i.e. increased by a factor of 4.

Explanation:

The tension in the string is the centripetal force. This force is given by

F = \dfrac{mv^2}{r}

m is the mass, v is the velocity and r is the radius.

It follows that F \propto v^2, provided m and r are constant.

When v is doubled, the new force, F_1, is

F_1 = \dfrac{m(2v)^2}{r} = \dfrac{4mv^2}{r} = 4\dfrac{mv^2}{r} = 4F

Hence, the tension in the string is quadrupled.

8 0
3 years ago
An engine absorbs 1.69 kJ from a hot reservoir at 277°C and expels 1.25 kJ to a cold reservoir at 27°C in each cycle.
Anna35 [415]

Answer

Given,

Energy absorbed, Q_H = 1.69\ kJ

Energy expels,Q_C =  1.25\ kJ

Temperature of cold reservoir, T = 27°C

a) Efficiency of engine

 \eta = \dfrac{Q_H - Q_C}{Q_H}\times 100

 \eta = \dfrac{1.69 - 1.25}{1.69}\times 100

\eta =26.03 %

b) Work done by the engine

 W = Q_H- Q_C

 W =1.69 - 1.25

 W = 0.44\ kJ

c) Power output

     t = 0.296 s

   P = \dfrac{W}{t}

   P = \dfrac{0.44}{0.296}

   P = 1.486\ kW

8 0
3 years ago
Gravitational potential energy is due to....
mote1985 [20]

Answer:

A

Explanation:

I only think its A because of the gravity part...sorry im not good at explaining

5 0
3 years ago
Pls help me its due today ​
poizon [28]

Answer:

pls give me brainliest

Explanation:

3 0
3 years ago
Do you even juul bro?
blsea [12.9K]

Answer:

No

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Please help as much as you can! Thank you
    6·1 answer
  • What is a risk assessment
    6·2 answers
  • If the speed and mass of an object are doubled, which of the following is true?
    9·1 answer
  • What is the force on an object that goes from 35m/s to 85 m/s in 20 seconds and has a mass of 148kg?
    5·1 answer
  • Which of the following is an example of technology influencing science?
    15·2 answers
  • What is the density of a rock with a mass of 10 grams and a volume of 5 ml
    9·1 answer
  • Two steamrollers begin 115 mm apart and head toward each other, each at a constant speed of 1.10 m/sm/s . At the same instant, a
    10·1 answer
  • Stephanie está haciendo una investigación
    12·1 answer
  • What does fissure and conduit have in common?
    15·1 answer
  • Please help lol<br> im on my sisters acc btw
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!