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Tema [17]
2 years ago
9

19 dm expressed in millimeters

Physics
1 answer:
alina1380 [7]2 years ago
6 0
1900 millimeters thats wht i got
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If you throw a ball up into the air and it reaches its original height after 6 seconds, calculate how high above its original po
mixer [17]

Explanation:

Assuming that there is no air resistance, the given time means that the ball reached its maximum height 3 seconds after throwing it upwards so we can solve its

maximum height by solving for v_{0y} first:

v_y = v_{0y} - gt \Rightarrow v_{0y} = gt

v_{0y} = (9.8\:\text{m/s}^2)(3\:\text{s}) = 29.4\:\text{m/s}

Now that we know v_{0y}, we can now solve for y_{max}:

y_{max} = v_{0y}t - \frac{1}{2}gt^2

\:\:\:\:\:\:=(29.4\:\text{m/s})(3\:\text{s}) - \frac{1}{2}(9.8\:\text{m/s}^2)(3\:\text{s})^2

\:\:\:\:\:\:=44.1\:\text{m}

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3 years ago
The acceleration produced by a net force on an object is
Inessa05 [86]
Inversely proportional to the mass of the object directly proportional to the magnitude of the net force in the same direction as the net force
5 0
3 years ago
A photographer is in a green field of grass on a sunny day. She decides to use a red camera filter to take a picture. What color
Sever21 [200]

Answer:

Based on color theory it would come out as brown

Explination:

Basic color theory states the primary colors are red yellow and blue. Expanding that to the rainbow you know. Red plus yellow equals orange. Yellow plus blue equals green. And blue plus red equals purple. Red and Green are opposite colors and when you combine opposite colors you get brown

7 0
3 years ago
Read 2 more answers
A playground ride consists of a disk of mass M = 49 kg and radius R = 1.7 m mounted on a low-friction axle. A child of mass m =
HACTEHA [7]

Answer:

The angular speed is 0.83 rad/s.

Explanation:

Given that,

Mass of disk M=49 kg

Radius = 1.7 m

Mass of child m= 29 kg

Speed = 2.6 m/s

Suppose if the disk was initially at rest , now how fast is it rotating

We need to calculate the angular speed

Using conservation of momentum

m\omega_{i}=(mr^2+\dfrac{Mr^2}{2})\omega_{f}

mvR=(mr^2+\dfrac{Mr^2}{2})\omega

Put the value into the formula

29\times2.6\times1.7=(29\times1.7^2+\dfrac{49\times1.7^2}{2})\omega_{f}

\omega_{f}=\dfrac{29\times2.6\times1.7}{(29\times1.7^2+\dfrac{49\times1.7^2}{2})}

\omega_{f}=0.83\ rad/s

Hence, The angular speed is 0.83 rad/s.

4 0
3 years ago
Pls help look at photo
tatiyna

Answer:

A

Explanation:

Intensity is proportional to amplitude

6 0
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