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tensa zangetsu [6.8K]
2 years ago
7

Which statement about bout waves is correct?

Physics
1 answer:
Eva8 [605]2 years ago
6 0

Answer:

In light waves, the electromagnetic fields oscillate perpendicular to the direction of propagation. Hence, sound waves are longitudinal waves whereas light waves are transverse waves.

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A 1.35 ×103 kg car rounds a circular turn of radius 11.9 m. The acceleration of gravity is 9.81 m/s 2 . If the road is flat and
mihalych1998 [28]

Answer:

velocity = 8.84 m/s

Explanation:

given data

radius r =  11.9 m

acceleration of gravity g = 9.81 m/s²

static friction μ = 0.67

to find out

how fast can the car go without skidding

solution

we get here velocity that is car go without skidding is express as

force = \frac{mv^2}{r}

force = μ × mg

μ × mg = \frac{mv^2}{r}

v² = μ × r × g

v = \sqrt{\mu *r*g}    ..................1

v = \sqrt{0.67 *11.9*9.81}

v = 8.84 m/s

velocity = 8.84 m/s

3 0
3 years ago
What type of<br> Soil Jake need to plant the cactus?
Harrizon [31]
He would need to grow. it in sand or grit since Cactus's are usually grown in dry soil like sand.
8 0
4 years ago
As an aid in working this problem, consult Interactive Solution 3.41. A soccer player kicks the ball toward a goal that is 20.0
alekssr [168]

Answer:

V=14.9 m/s

Explanation:

In order to solve this problem, we are going to use the formulas of parabolic motion.

The velocity X-component of the ball is given by:

Vx=V*cos(\alpha)\\Vx=15.7*cos(31^o)=13.5m/s

The motion on the X axis is a constant velocity motion so:

t=\frac{d}{Vx}\\t=\frac{20.0}{13.5}=1.48s

The whole trajectory of the ball takes 1.48 seconds

We know that:

Vy=Voy+(a)*t\\Vy=15.7*sin(31^o)+(-9.8)*(1.48)=-6.42m/s

Knowing the X and Y components of the velocity, we can calculate its magnitude by:

V=\sqrt{Vx^2+Vy^2} \\V=\sqrt{(13.5)^2+(-6.42)^2}=14.9m/s

6 0
4 years ago
May I please have some help with finding the slope in this graph?
Kisachek [45]
The slope is always

             (the change in 'y')
divided by
             (the change in 'x') .

This line is so easy ... it crosses all the corners of the boxes,
so you have tons of choices of what 2 points to pick.
But let's just pick the ends of the line.

From the beginning to the end of the line:   

-- the change in 'y' is  4 meters

-- the change in 'x' is  40 seconds


Slope =  (the change in 'y')  divided by  (the change in 'x') .

           =       (4 meters)             /                (40 seconds)

           =         0.1 meter/second .

8 0
4 years ago
A spaceship has a momentum of 45,000 kg-m/s to the right, and a mass of 200 kg. What is the magnitude of its velocity?
amm1812

Answer:

v = 225 m/s

Explanation:

Given,

The momentum of the spaceship, p = mv    = 45,000 Kg m/s

The mass of the spaceship, m = 200 Kg

The velocity of the spaceship, v = ?

The relationship between the momentum, mass, and velocity is given by the formula

                                    p = mv     Kg m/s

Therefore,

                                    v = p/m     m/s

Substituting the values in the above equation

                                     v = 45,000 Kg m/s   /  200 Kg

                                        = 225 m/s

Hence, the magnitude of velocity of the spaceship is, v = 225 m/s

5 0
3 years ago
Read 2 more answers
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