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3 years ago

Which of the following produces the energy, initial motion, and direction of the surface currents in the ocean

Physics

2 answers:

Mademuasel [1]3 years ago

8 0

Answer is D

The Prevailing is the direction of the surface

damaskus [11]3 years ago

7 0

Answer:D

Explanation:

Prevailing winds

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Problem: An ice hockey player hits a puck of mass 0.15 kilograms with a force of 100 newtons in the horizontal direction. What i

valina [46]

The acceleration produced in a body is always in the direction of the resultant force acting on the body. Therefore, we may determine the horizontal acceleration using the horizontal force applied. To do this, we may apply the mathematical form of Newton's second law:

Force = mass * acceleration
acceleration = force / mass

Substituting the values,
a = 100 / 0.15
a = 666.7 m/s²

The acceleration of the hockey puck is 670 m/s²

7 0

3 years ago

Read 2 more answers

A little help please?

Elanso [62]

The answer is D, Carbon and hydrogen

8 0

3 years ago

An object moves at 60 m/s in the +x direction. As it passes through the origin it gets a 4.5 m/s^2 acceleration in the -x direct

Brut [27]

Answer:

a) After 26.67 seconds it returns back to the origin

b) Velocity when it returns to the origin = 60 m/s in the -x direction

Explanation:

a) Let the starting position be origin and time be t.

After time t displacement, s = 0 m

Initial velocity, u = 60 m/s

Acceleration, a = -4.5 m/s²

We have equation of motion s = ut + 0.5 at²

Substituting

s = ut + 0.5 at²

0 = 60 x t + 0.5 x (-4.5) x t²

2.25t² - 60 t = 0

t² - 26.67 t = 0

t (t-26.67) = 0

t = 0s or t = 26.67 s

So after 26.67 seconds it returns back to the origin

b) We have equation of motion v = u + at

Initial velocity, u = 60 m/s

Acceleration, a = -4.5 m/s²

Time , t = 26.67

Substituting

v = 60 - 4.5 x 26.67 = -60 m/s

Velocity when it returns to the origin = 60 m/s in the -x direction

4 0

4 years ago

The red shift of light from distant galaxies provides evidence that these galaxies are A.) decreasing in size B.) increasing in

ale4655 [162]

Answer: D.) increasing in distance from the earth

Explanation:

The <u>Doppler shift</u> is related to the Doppler effect and refers to the change in a wave perceived frequency (or <u>wavelength=color</u>) when the emitter of the waves, and the observer move relative to each other.

From there, it is deduced that the farther the object is, the more redshifted it is in its spectrum. For example, <u>as a galaxy moves away from the Earth, its espectrum turns towards the red and as the galaxy moves toward the Earth, its espectrum turns towards the blue. </u>

It should be noted that this effect bears its name in honor of the Austrian physicist Christian Andreas Doppler, who in 1842 proposed the existence of this effect for the case of light in the stars.

3 0

3 years ago

An object is thrown straight up with a velocity, in ft/s, given by v(t)= -32t + 83, where t is in seconds, from a height of 46 f

____ [38]

<h2>a) Initial velocity = 83 ft/s</h2><h2>b) Object's maximum speed = 99.4 ft/s</h2><h2>c) Object's maximum displacement = 153.64 ft</h2><h2>d) Maximum displacement occur at t = 2.59 seconds.</h2><h2>e) The displacement is zero when t = 5.70 seconds</h2><h2>f) Object's maximum height = 153.64 ft</h2>

Explanation:

We have velocity

v(t)= -32t + 83

Integrating

s(t) = -16t²+83t+C

At t = 0 displacement is 46 feet

46 = -16 x 0²+83 x 0+C

C = 46 feet

So displacement is

s(t) = -16t²+83t+46

a) Initial velocity is

v(0)= -32 x 0 + 83 = 83 ft/s

Initial velocity = 83 ft/s

b) Maximum velocity is when the object reaches ground, that is s(t) = 0 ft

Substituting

0 = -16t²+83t+46

t = 5.70 seconds

Substituting in velocity equation

v(t)= -32 x 5.70 + 83 = -99.4 ft/s

Object's maximum speed = 99.4 ft/s

c) Maximum displacement is when the velocity is zero

That is

-32t + 83 = 0

t = 2.59 s

Substituting in displacement equation

s(2.59) = -16 x 2.59²+83 x 2.59+46 = 153.64 ft

Object's maximum displacement = 153.64 ft

d) Maximum displacement occur at t = 2.59 seconds.

e) Refer part b

The displacement is zero when t = 5.70 seconds

f) Same as option d

Object's maximum height = 153.64 ft

5 0

4 years ago