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
Helga [31]
2 years ago
15

From the edge of a cliff, a 0.46 kg projectile is launched with an initial kinetic energy of 1430 J. The projectile's maximum up

ward displacement from the launch point is +150 m. What are the (a) horizontal and (b) vertical components of its launch velocity? (c) At the instant the vertical component of its velocity is 65 m/s, what is its vertical displacement from the launch point? Take up to be the positive direction.
Physics
1 answer:
wel2 years ago
7 0

Answer:

Explanation:

Given

mass of Projectile(m)=0.46 kg

Initial Kinetic Energy=1430 J

Maximum upward displacement from Launch point=150 m

K.E.=\frac{mv^2}{2}

1430\times 2=0.46\times v^2

v=78.85 m/s

and H_{max}=\frac{v^2\sin ^2\theta }{2g}

150=\frac{(78.85)^2\sin ^2\theta }{2\times 9.8}

\sin \theta =0.687

\theta =43.39^{\circ}

initial horizontal velocity(v_x)=v\cos \theta

v_x=78.84\times \cos (43.39)=57.29 m/s

Initial vertical velocity(v_y)=v\sin \theta

v_y=78.85\times \sin (43.39)

v_y=54.16 m/s

(c)vertical velocity at any instant=65 m/s

Since initial vertical velocity is 54.16 m/s

so 65 m/s will be acquired when projectile started falling below cliff

v^2-u^2=2 a s

65^2-54.16^2=2\times 9.8\times s

s=65.90 m

You might be interested in
What is the difference between magnetism and a magnetic field
kkurt [141]
Is the physical phenomena arising from the force caused by magnet  objects that produce fields that attract or repel other objects while magnetic field is a region around the magnetic material or a moving electric charge within the force of magnetism acts 
 
6 0
3 years ago
Read 2 more answers
what will be the restoring force if a spring with a spring constant of 45 newtons per meter is pulled 0.30 meters in the downwar
Anna35 [415]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the choices the can be found elsewhere:

A.) 14 newtons upward 
<span>B.) 45 newtons upward </span>
<span>C.) 67 newtons upward </span>
<span>D.) 130 newtons upward </span>
<span>E.) 150 newtons upward
</span>
The answer is A.) 14 newtons upward


7 0
2 years ago
A transformer consists of a 500 turn primary coil and a 2000-turnsecondary coil. If the current in the secondary is 3.0A, what i
Neporo4naja [7]

Answer:

The correct solution will be "12.0 A".

Explanation:

The given values are:

N_p= 500 \ turn

N_s= 200 \ turn

I_s= 3.0 \ A

By using the transformer formula, we get

⇒ \frac{N_p}{N_s}  =\frac{I_s}{I_p}

⇒ I_p = I_s\times \frac{N_s}{N_p}

On substituting the given values, we get

⇒      =3.0 \ A\times \frac{2000}{500}

⇒      =12.0 \ A

8 0
3 years ago
If Juan upgrades from a sports car to a large truck, what will happen to the
Brrunno [24]

Answer:

The force must increase

Explanation:

According to newton's second law "force is the product of mass and acceleration".

      Force  = mass  x acceleration

Now, the mass of the sports car is lesser compared to that of the truck. Therefore, to take both automobiles to the same speed, enough force must be applied by the engine of the truck.

There must be an increase in the force in order to make both automobiles attain the same speed.

5 0
2 years ago
You need to build a prototype with machined parts that withstand a saline corrosive environment and temperatures above 200 degre
kondor19780726 [428]

Answer:

Stainless steel

Explanation:

I will try to order the solutions from the least correct to the most correct.

Since a temperature greater than 200 ° F is required, that is to say approximately 93 ° c, <em>Polycaprolactone</em> is the least indicated. Its melting point is approximately 60 ° C, so it would not serve the required application.

On the other hand we have<em> Untreated aluminum</em>, which although it has a melting point higher than the required one, without a zinc and magnesium treatment it will easily oxidize in a salty environment, so it cannot be used in this choice either.

We have to compare the two steels.

The<em> Mild Steel </em>has a better corrosion resistance than the previous ones, but in a long-term cycle it will end up full of corrosion and therefore its properties will be highly affected.

Finally, we have <em>stainless steel</em>, which, as the name implies, contains in some of its variations chromium, zinc or magnesium in its alloys, which makes it highly resistant to corrosion.

In addition its melting point is above 1500 ° c.

The best choice is stainless steel.

5 0
3 years ago
Other questions:
  • Sally made breakfast for the family on Saturday morning. She put some bread in the toaster. When the bread popped up, Sally grab
    14·2 answers
  • which object has the most gravitational potential energy? A. an 8 kg book at a height of 3m B. an 5 kg book at a height of 3 m C
    7·2 answers
  • A grating with 400 lines per mm is illuminated with light of wavelength 600.0 nm. a Determine the angles at which maxima are obs
    12·1 answer
  • According to quantum mechanics the motions of subatomic particles may be described as
    14·1 answer
  • What is the magnitude of the resultant vector? Round your answer to the nearest tenth.
    7·2 answers
  • If two objects are the
    5·1 answer
  • A roller coaster car has a mass of 400kg and a speed of 15m/s What will be the P.E of this roller coaster car at its highest poi
    12·1 answer
  • Can anybody answer this its a science question NO LINKS !!!!
    5·1 answer
  • How does wind from? nnnnnnnnnn
    8·1 answer
  • Which statement is best supported by the information in the chart? Wave X and Wave Y are mechanical waves, and Wave Z is an elec
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!