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
Snezhnost [94]
3 years ago
12

Help me to solve this please

Physics
2 answers:
iris [78.8K]3 years ago
8 0

Answer:

the are are7

D

Explanation:

aivan3 [116]3 years ago
6 0

Answer:

2) 7

3) 5

Explanation:

You might be interested in
Pls what is a friendly relationship
Anuta_ua [19.1K]

Answer:

A relationship where both members are freindly and supportive towards each other.

Explanation:

Brainliest?

4 0
4 years ago
Read 2 more answers
What is the unit of velocity ratio and why​
Tju [1.3M]

Answer:

the unit of velocity is meter per second

3 0
2 years ago
Read 2 more answers
Calculate the energy released as heat when 51.60 g Cu 2 O ( s ) undergo oxidation at constant pressure.
lesya692 [45]

Answer:

Energy released as heat will be -189.417 Kj

Explanation:

The oxidation is the type of reaction in which reaction occurs in the presence of oxygen. The exothermic reaction is the type of reaction in which heat is released. The enthalpy is the type of physical quantity that is used to measure the energy in the thermodynamic system.

As we know the molar mass of Copper II Oxide is 79.545 g

Also the oxidation of  copper(II) oxide, CuO(s), is an exothermic process, 2Cu2O (s) + O2-->4CuO (s) delta H reaction= -292.0 kj/mol.

So for 51.60g of Copper II Oxide,

Heat released will be (-292.0 * 51.60/79.545) = -189.417 Kj

6 0
3 years ago
I WILL MARK BRAINLIEST
Yuliya22 [10]
Sound waves require a medium. For example - think about space. there is no air or liquid because it is a vacuum, which is why sounds don’t travel through space.
4 0
4 years ago
How do bearings help reduce friction?​
CaHeK987 [17]
Bearings reduce friction by means of rolling motion (reduces friction more than the « plain bearing »). sliding motion allows a greater decrease in the amount of energy consumption during rotation.
7 0
3 years ago
Other questions:
  • What type of interaction allows the sidewalk to heat up and cook the egg? 
    14·2 answers
  • A 5.4 kg object has a velocity of 5 m/s. It collides with a 1.7 kg object which is not moving before the collision. After the co
    11·1 answer
  • Use Gauss' law to find the E field of an infinite solid cylinder of charge of radius R and charge density lambda per unit length
    8·1 answer
  • The instantaneous velocity of an object is the blank of the object with a blank
    7·2 answers
  • List at least three major differences between Pluto and the terrestrial planets.
    5·1 answer
  • Write any two difference between air pump and water pump.​
    10·1 answer
  • A typical adult human lung contains about 330 million tiny cavities called alveoli. Estimate the average diameter of a single al
    13·1 answer
  • What event is considered the physical start of adolescence in females?
    14·2 answers
  • What type of energy is mowing a lawn ? quick pleaseeeeeeeeeeeeeeeeeeeee
    6·2 answers
  • Elsa has three metal blocks that look the same.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!