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
Vika [28.1K]
3 years ago
7

A car moves from the point (3.0 m)x^ + (5.0 m)y^ to the point (8.0 m)x^ - (7.0 m)y^ in 2.0 s. what is the magnitude of the avera

ge velocity of the car?
Physics
1 answer:
Mandarinka [93]3 years ago
4 0
8.0-3.0=5.0metres in the x direction
7.0-5.0=2.0 metres in the y direction
Use Pythagoras
25+4=29
\sqrt[2]{29  }
=5.39metres in 2secs
=2.645m/s at an angle of 68.2 degrees to horizontal.... see below!
tan-1 angle = 5/2
angle=68.2 degrees
You might be interested in
If a ball is tossed straight up into the air, at what position is its potential energy the greatest?
krok68 [10]
A. when it reaches the top of its flight

potential energy increases as the height of the object does, and the highest point of a ball's flight is when it reaches the top. 
4 0
3 years ago
Read 2 more answers
The resistance created by waves on a 120-m-long ship is tested in a channel using a model that is 4 m long Y Part A If the ship
DanielleElmas [232]

Answer:

V_m = 12.78 km/hr

Explanation:

given,

length of the ship = 120 m

length of model of the ship = 4 m

Speed at which the ship travels = 70 km/h

speed of model = ?

by using froude's law

  F_r = \dfrac{V}{\sqrt{L g}}

for dynamic similarities

  (\dfrac{V}{\sqrt{L g}})_P = (\dfrac{V}{\sqrt{L g}})_{model}

  (\dfrac{V_p}{\sqrt{L_p}}) = (\dfrac{V_m}{\sqrt{L_m}})

  (\dfrac{70}{\sqrt{120}}) = (\dfrac{V_m}{\sqrt{4}})

          V_m = 12.78 km/hr

hence, the velocity of model will be 12.78 km/h

6 0
3 years ago
I Explain why you feel cold when tap or well water in winter. state with reason.<br><br>​
attashe74 [19]

Answer:

We feel cold when tap or well water in winter because heat flows from hot body to cold body.

Explanation:

Our <em>body</em><em> </em><em>is</em><em> </em><em>in</em><em> </em><em>optimal</em><em> </em><em>status</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>hot</em><em> </em><em>body</em><em> </em><em>and</em><em> </em><em>tap</em><em> </em><em>or</em><em> </em><em>we</em><em>ll</em><em> </em><em>water</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>cold</em><em> </em><em>body</em><em>.</em><em> </em><em>Theref</em><em>ore</em><em> </em><em>we</em><em> </em><em>feel</em><em> </em><em>cold</em><em>.</em>

3 0
2 years ago
If you hear thunder 5 seconds after you see a lightning bolt how far is the storm
NikAS [45]
I think the answer is 3 miles because its storming now where I live

4 0
3 years ago
Read 2 more answers
Which solid state component allows a mobile phone to store data even if the battery is removed
Talja [164]

Answer:

Capacitor

Explanation:

Capacitor ; A capacitor is a passive two-terminal electrical component that can store energy in an electric field electrostatically. It works as a small rechargeable battery that stores electricity. However, unlike a battery, it can charge and discharge in the split of a second. Capacitors are widely used to build different types of electronic circuits.

6 0
3 years ago
Other questions:
  • What does the person in back of the ambulance experience? A) a lower frequency of the siren B) a lower amplitude of the siren C)
    11·2 answers
  • Precise measurements of earth indicate that its polar diameter is
    6·1 answer
  • Shelby travels 6 meters East, 2 meters North, 3 meters West, and then 2 meters South. What is their displacement?
    10·1 answer
  • 3. what could you do to increase the precision of your measurements? What factors limit the
    8·1 answer
  •  True or False? Anything that moves up and down or back and forth in a rhythmic way is vibrating.
    15·1 answer
  • What is the average speed of a cheetah that runs 70 m in 2.5 seconds?
    8·1 answer
  • Luis and Aisha conducted an experiment. They exerted different forces on four objects. Their results are shown in the table.
    15·2 answers
  • An atom with more or less neutrons than expected is a what ?
    6·1 answer
  • 7. Many medicines started out as natural products.Penicillin was originally made from _______________
    8·2 answers
  • - A straight wire, 0.20 m long, moves at a constant speed of 7.0 m/s
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!