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
german
3 years ago
14

If r⃗ =bt2i^+ct3j^, where b and c are positive constants, when does the velocity vector make an angle of 45.0∘ with the x- and y

-axes?
Chemistry
1 answer:
Papessa [141]3 years ago
5 0
The displacement function is given by : r = bt2i + ct3j meters
The velocity function is the derivative of the displacement:
v = r' = 2bti + 3ct2j meter / second

Now, for <span> the velocity vector make an angle of 45.0∘ with the x- and y-axes, the i and j components have to be equal:
</span>2bt = 3ct2 (Now solve for t)
2bt = t (3ct)
either t = zero (rejected)
or t = 2b / 3c seconds (accepted)
You might be interested in
The following phase diagram shows how a catalyst affected the rate of a reaction.
Maslowich
The correct  answer is C
8 0
3 years ago
Read 2 more answers
Which statements describe or apply the principal of conservation of energy? Select all that apply.
laila [671]

Answer:

A, C, and D

Explanation:

The correct options that apply to the principal conservation of energy are A, C, and D.

A is correct because energy can neither be created nor destroyed. However, energy can be transfered from one location to another or be converted from one form to another. <em>Whether transferred to converted, the magnitude remains the same.</em>

C is correct because energy cannot be destroyed but can be transferred or converted. <em>Hence, if a body or a location loses temprature, then the loss is being gained by another body or location.</em>

D is also correct. A closed system is a system that does not exchange matter with its surroundings. <em>Hence, the total energy remains the same within the system. </em>

7 0
3 years ago
Read 2 more answers
Would you classify the atoms in the table as pure substances?
ivann1987 [24]

Answer:

Yes

Explanation:

Atoms are generally classified as pure substances. A pure substance has the following properties:

  • All parts are the same throughout i.e. homogeneous
  • They have definite composition
  • The cannot easily be broken down into simpler substances by physical means.
  • Separation by physical methods is not easy.
  • They have unique sets of physical properties.

Elements and compounds are generally classified as pure substances. Since atoms are the building blocks of pure substances, they can be classified as one.

3 0
3 years ago
What four properties do all waves have in common
Nina [5.8K]

The different types of motion

3 0
3 years ago
Read 2 more answers
Rank the following aqueous solutions in order of increasing<br> (c) freezing point;
saveliy_v [14]

0.01 m AgNO_{3} < 0.03 m CuSO_{4}< 0.04 m urea

As molal concentration rises, so does freezing point depression. It can be expressed mathematically as ΔTf = Kfm.

<h3>What is Colligative Properties ?</h3>
  • The concentration of solute particles in a solution, not the composition of the solute, determines a colligative properties .
  • Osmotic pressure, boiling point elevation, freezing point depression, and vapor pressure reduction are examples of ligand-like properties.
<h3>What is freezing point depression?</h3>
  • When less of another non-volatile material is added, the temperature at which a substance freezes decreases, a process known as Freezing-point depression.
  • Examples include combining two solids together, such as contaminants in a finely powdered medicine, salt in water, alcohol in water.
  • An significant factor in workplace safety is freezing points.
  • If a substance is kept below its freezing point, it may become more or less dangerous.
  • The freezing point additionally offers a crucial safety standard for evaluating the impacts of worker exposure to cold conditions.

Learn moree about Colligative Properties here:

brainly.com/question/10323760

#SPJ4

5 0
2 years ago
Other questions:
  • If an atom has one valence electron, how will it form ions?
    15·1 answer
  • A balloon filled with air has a volume of 6.50 L, a pressure of 0.900 atm, and a temperature of 25.0oC. If it is left out overni
    15·1 answer
  • Use the drop-down menus to complete the statements
    5·1 answer
  • Do people live near the volcano called Tuya?
    14·1 answer
  • The pH of a solution measures the [H3O+] in the solution. If one solution has a pH of 4 and another solution has a pH of 3, how
    8·2 answers
  • What type if bonds hold two oxygens together to form O2 ?​
    13·1 answer
  • Which represents a balanced nuclear equation?
    13·1 answer
  • Is Homosalate (C16H22O3) ionic or covalent?
    6·1 answer
  • Help pls i really need help
    13·2 answers
  • We can change a gas to liquid by <br> the temperature and <br> the pressure.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!