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4 years ago

13

as you move from left to right across the electromagnetic spectrum in the image, the wavelength becomes a. longer b. lower c. sh

orter d. taller

1 answer:

Setler [38]4 years ago

7 0

Answer:

A. Longer

Explanation:

The shortest wave length is from the left and is gamma rays. The longest is radio waves to the right.

Hope this helps! :]

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A rugby player passes the ball 7.00 m across the field, where it is caught at the same height as it left his hand. If the pass w

Sauron [17]

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3 years ago

During the deceleration of an ascending elevator, the normal force on the feet of a passenger is _____ her weight. During the de

gizmo_the_mogwai [7]

Answer: Smaller than ; larger than

Explanation:

When the elevator is moving in the upward direction, then the force acting on it is negative in nature because of

N= mg +ma, (g is gravity and a is acceleration)

here ma is negative so the N= mg-ma

Hence, it feels smaller than its original weight.

When the elevator is moving downward , then the force acting will be positive in nature

N= mg+ma,

here ma will be positive so it feels larger the original weight of passenger.

7 0

3 years ago

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

Mandarinka [93]

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

4 0

4 years ago

A roller coaster accelerates from an initial speed of 6.0 m/s to a final of 70 m/s over 4 seconds. What is the rigth formula to

Anton [14]

Answer:

a = 16 m/s²

Explanation:

Given that,

Initial speed of a roler coaster, v₁ = 6 m/s

Final speed of a roller coaster, v₂ = 70 m/s

Time, t = 4s

We know that, acceleration of an object is equal to the rate of change of velocity. Let the acceleration be a. Its formula is given by :

$a=\dfrac{v_2-v_1}{t}$

or

$v_2=v_1+at$

The correct option is (1). Its value is equal to :

$a=\dfrac{70-6}{4}\\\\a=16\ m/s^2$

Its value is equal to 16 m/s².

6 0

3 years ago

According to Lenz's law, an induced current in the direction depicted in the picture would be created when: a. An external downw

LenKa [72]

Answer:

C. An external downward field is created or an external downward field is removed

Explanation:

As we can see that from the attached figure that the induced current would be counter clockwise. So the field occur because of induced current i.e. out of page. This represent that the current is induced in order to rise the flux out of the direction of the page

Therefore because of the external field, the field out of page & flux would be reducing or the external upward field is eliminated

So option C is correct

7 0

3 years ago