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
zaharov [31]
3 years ago
9

A man walks 30m to the west, then 5m to the east in 45 seconds. What is the average velocity?

Physics
2 answers:
solong [7]3 years ago
8 0
1.28m/s the velocity is found by distance/time.
ryzh [129]3 years ago
6 0
Average speed- (35m/45s)= 7/9 meters per second.
Average velocity-(30w + 5m E) / (45s)= 25 m/s West.
Hope this helps. :)
You might be interested in
The instrument which is commonly used to measure the intensity of radioactivity is called a
tatyana61 [14]
The instrument is a Geiger counter and is used to measure radioactive level around people's bodies.
4 0
3 years ago
Read 2 more answers
A tall cylinder contains 30 cm of water. Oil is carefully poured into the cylinder, where it floats on top of the water, until t
Anastaziya [24]

Answer:

The gauge pressure is  P_g  =  2058 \ P_a

Explanation:

From the question we are told that

       The height of the water contained is  h_w  =  30 \ cm  =  0.3 \ m

        The height of liquid in the cylinder is  h_t  =  40 \ cm  = 0.4 \ m

       

At the bottom of the cylinder the gauge pressure is  mathematically represented as

        P_g  =  P_w + P_o

Where  P_w is the pressure of water which is mathematically represented as

      P_w  =  \rho_w  *  g * h_w

Now  \rho_w is the density of water with a constant values of  \rho_w  = 1000 \ kg /m^3

   substituting values

      P_w  = 1000 *  9.8 *  0.3

     P_w  =  2940 \  Pa

While P_o is the pressure of oil which is mathematically represented as

          P_o  =  \rho_o *  g *  (h_t -h_w )

Where \rho _o is the density of oil with a constant value

         \rho _o  = 900 \ kg / m^3

substituting values

       P_o  =  900 *  9.8 * (0.4 - 0.3)

       P_o  =  882 \ Pa

Therefore

      P_g  =  2940 - 882

      P_g  =  2058 \ P_a

6 0
3 years ago
Give two differences between Mass and weight​
nydimaria [60]

Answer:

my opi

Explanation:

Mass is like the inside of the weight. weight is just home much it weighs

8 0
3 years ago
What renewable source of energy would be suited to chicago IL?
Kay [80]

Answer:

Wind is the primary renewable resource used for electric power generation in the state. In 2019, wind provided 97% of the state's renewable energy generation, and Illinois was sixth in the nation in utility-scale (1 megawatt or greater) wind capacity, with about 5,200 megawatts online.

Explanation:

7 0
2 years ago
A 1700 W laser emits light with a wavelength of 700 nm into a 3.0 mm diameter beam. What force does the laser beam exert on a co
maks197457 [2]

Answer:

F=5.7×10⁻⁶

Explanation:

Not knowing a formula outright, I decided to follow the units of some relationships I did know. Radiation pressure is defined as force per area and also intensity divided by velocity (the speed of light here of course). Breaking intensity down into power per area and isolating force gave me the relationship F=(Power/Velocity),where power is given and the velocity is a constant.

My work is in the attachment, where I double checked the units too, comment with any questions.

5 0
3 years ago
Other questions:
  • A certain metal wire has a cross sectional area of 1 mm2 and is 1 m long. when it is hung from the ceiling and a 10 kg mass is h
    10·1 answer
  • What does combustion mean?what clues help u detemine the meaning?
    6·2 answers
  • What are some similarities between heat and temperature? 
    12·2 answers
  • Most of the Earth’s water is found in the rivers and lakes. t or d
    15·2 answers
  • What is the velocity of a wave that has a frequency of 200 Hz and a<br> wavelength of 0.5m?
    15·1 answer
  • Which of the following is the most important difference between a permanent magnet and a electromagnet
    6·1 answer
  • A 10 Kg dog is running with a speed of 5.0 m/s what is the minimum work required to stop the dog
    5·1 answer
  • (PLEASE answer ASAP, Will give brainliest)
    15·1 answer
  • It is a set of measure designed to determine the level of physical fitness?
    11·1 answer
  • If someone weighs 80n on Mars and comes back on earth will they weigh the same
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!