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
Elodia [21]
4 years ago
7

A boat travels at 15 m/s in a direction 45° east of north for an hour. The boat then turns and travels at 18 m/s in a direction

5° north of east for an hour. What is the magnitude of the boat’s resultant velocity? Round your answer to the nearest whole number. m/s What is the direction of the boat’s resultant velocity? Round your answer to the nearest whole degree. ° north of east

Physics
2 answers:
taurus [48]4 years ago
8 0

Answer:

31m/s

23.17°

Explanation:

Given the following :

From the diagram attached :

AB = 15m/s, BC = 18m/s, AC = a = resultant

Resolving Velocity into both vertical and horizontal component.

Kindly see attached picture for detailed explanation.

Ilya [14]4 years ago
3 0

The first blank is 31m/s

The second blank is 23°

You might be interested in
A helium tank holds a volume of .02 m^3 at a pressure of 15.5*10^6 Pa and a temperature of 293 K. How many spherical balloons wi
lukranit [14]

Answer:

Explanation:

We shall find the volume of stored gas at atmospheric pressure .

P₁ V₁ = P₂ V₂

15.5 x 10⁶ x .02 = 10⁵ x V₂  ( atmospheric pressure is 10⁵ Pa )

V₂ = 3.1 m³

volume of one balloon = 4/3 x π r³ , r is radius of balloon

= 4/3  π x .11³

= .050658 m³

no of balloon = total volume to be filled / volume of one balloon

= 3.1 / .050658

= 61 .2

= 61

7 0
3 years ago
If 5J of work are done on a spring, compressing it by 12cm, what is the spring constant?
mash [69]

Answer:

k=694.44

Explanation:

PE=1/2kx^2

5=1/2k*.12^2

5=1/2k(.0144)

divide both sides by .0144

3 0
3 years ago
5. Why are ceramics and plastics good insulators?
jeka57 [31]

Answer:

Here

Explanation:

They don't have free electrons moving around (delocalised electrons) so they can't conduct heat and electricity which gives them a property of good insulators. The insulators stop us having an electric shock because they don't conduct electricity as we use them to insulate metal wires and other metallic things. can i have brainliest now pls!

3 0
3 years ago
A body starts with a velocity of 20 m/s, accelerates uniformly for a time t, moves with constant velocity for the same time, and
Bezzdna [24]

Answer:

t=0.14s

Explanation:

  • t=
  • <em><u>\frac{s}{v}</u></em>
  • <em><u>t</u></em><em><u>=</u></em>
  • <em><u>\frac{20}{140}</u></em>
  • <em><u>Where</u></em><em><u> </u></em><em><u>s</u></em><em><u>=</u></em><em><u> </u></em><em><u>speed</u></em>
  • <em><u>V</u></em><em><u>=</u></em><em><u>distance</u></em><em><u> </u></em>
  • <em><u>And</u></em><em><u> </u></em><em><u>t</u></em><em><u>=</u></em><em><u>time</u></em><em><u> </u></em>
7 0
4 years ago
____ 27. An amusement park ride has a frequency of 0.05 Hz. What is the ride’s period?
nirvana33 [79]
T = 1 / f = 1 / 0.05Hz = s
7 0
3 years ago
Other questions:
  • The latent heat of fusion of water at 0 °C is 6.025 kJ mol'' and the molar heat
    8·1 answer
  • Find the electric flux passing through the 45° surface of an upright circular cone with a base diameter of 4 m if the electric f
    12·1 answer
  • 11. A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not read
    9·1 answer
  • Electrically neutral objects cannot exert an electrical force on each other, but they can exert a gravitational force on each ot
    7·1 answer
  • Which colors will eject electrons when they strike sodium, which has a frequency threshold of 5.7 × 1014 Hz?
    5·2 answers
  • The density of un-set concrete is 2.40 x 10 3 kg/m 3 . When a block with volume 0.0708 m 3 is
    5·1 answer
  • A women steps in front of a child to keep them from running. what best terms describe the example
    5·1 answer
  • A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm.
    11·2 answers
  • Walking down a pebble beach becomes less painful as you enter the sea. Explain why.
    11·1 answer
  • 25. How long does it take a child on a swing to complete one swing if her center of gravity is 4.00 m below the pivot?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!