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
Taya2010 [7]
3 years ago
6

Which of the following is an example of velocity? Question 15 options: A plane travelling south towards the Bahamas. A man runni

ng 7 miles per hour west. A car sitting at a stop sign? A dog running at 5 miles per hour.
Chemistry
2 answers:
Rasek [7]3 years ago
7 0

Answer: A man running 7 miles per hour west.

Explanation: Vector quantity is a quantity which has both magnitude and direction.

Scalar quantity is a quantity which has only magnitude.

Velocity is a vector quantity which expresses the speed of the body along with the direction in which it is moving.

v=\frac{distance}{time}=\frac{miles}{hour}

Thus the correct option is A man running 7 miles per hour west.  

ad-work [718]3 years ago
6 0

Answer is: A man running 7 miles per hour west.

Velocity is equivalent to a specification of its speed and direction of motion, for example 100 km/h to the east.

Velocity is a physical vector quantity (measured in metres per second) and need magnitude and direction to define it, for example 100 metres per second east.

You might be interested in
Please help quick<br> Alkali means ___.
sveticcg [70]

Answer:

Metal

Explanation:

In chemistry, an alkali is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element. An alkali also can be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0.

8 0
3 years ago
What percentage of boys Chose walking
mafiozo [28]

It would of been nice if you were to post your question so others could actually answer it.

6 0
3 years ago
1. Why do scientists use a standard measurement system?
Margaret [11]

Answer:

Explanation:

1.Scientists use a shared system for reporting measurements called the International System of Units (SI). We use common measurement systems because science involves a lot of replication to confirm results. The most common system used in science is the metric system.

2.m, kg, m^3

3. g value change

3 0
3 years ago
Read 2 more answers
HELP! What is the percent composition of carbon in caffeine (C₈H₁₀N₄O₂)? Show your work
Dominik [7]

Caffeine has the following percent composition: carbon 49.48%, hydrogen 5.19%, oxygen 16.48% and nitrogen 28.85%. Its molecular weight is 194.19 g/mol.

8 0
3 years ago
This means that the steel bar lost 14900 J of thermal energy. What is the change in temperature of the steel bar? Recall that th
stiv31 [10]

Answer:

ΔT=-747,13°C

Explanation:

Sensible heat is<em> the amount of thermal energy that is required to change the temperature of an object</em>, the equation for calculating the heat change is  given by:

Q=msΔT

where:

  • Q, heat that has been absorbed or realeased by the substance [J]
  • m, mass of the substance [g]
  • s, specific heat capacity [J/g°C] (
  • ΔT, changes in the substance temperature [°C]

To solve the problem, we clear ΔT of the equation and then replace our data:

Q=msΔT

ΔT=Q/ms

ΔT=\frac{-14900 J}{40,7g*0,49\frac{J}{gC} }=-747,13°C

<em>(Note that Q=-14900 J because there is a </em><u><em>LOST</em></u><em> of thermal energy)</em>

Thus, the change in temperature of the steel bar is -747,13°C, meaning that the temperature of the bar decreases.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which characteristic of life is demonstrated when eagles use sharp talons to grab fish from the water?
    7·2 answers
  • The mass-to charge ratio of the proton is found to be
    8·1 answer
  • An ideal gas with MW = 30 is flowing at a steady rate through a circular pipe (cross-section area of 57.8 cm^2) at a temperature
    9·1 answer
  • What is The strength of a hurricane is ranked from 1 to 5 on the _________________.
    7·1 answer
  • Which element has an atomic number of 6? lithium boron carbon oxygen
    5·2 answers
  • The empirical formula for this compound that contain 31.14%sulfur and 68.86%chlorine by mass
    9·1 answer
  • What is the percent yield of the purification system
    15·1 answer
  • What is the bond formation of N and H
    10·2 answers
  • Which situation has given to a trait that could be passed on to offspring ?
    11·1 answer
  • How many moles are in 98.3 grams of NaF?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!