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ser-zykov [4K]
3 years ago
11

What are the independent, dependent and controlled variables in my science lab? The lab is about how the steepness of a ramp aff

ect how fast a rolling object rolls down the ramp. The variables are, rolling object, start and finish line on the ramp, and the ramp steepness. The start and finish line in this lab does not change. The right answer will get a brainliest!
Physics
1 answer:
Otrada [13]3 years ago
7 0

Answer: Get real-time help from a handyman! Book a free personal video consultation with an expert fixer now! The direct impact on angle of ramp is the acceleration but not speed. If you have the same height, both objects will hit the bottom at exactly the same speed

Hope it helps you please mark brainliest

Explanation:

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Two objects have the same velocity. These two objects have different masses. Which object will
kogti [31]

Answer:

The object with the greater mass will have the greater momentum

Explanation:

The momentum of an object with mass <em>m</em>, moving with velocity <em>, </em>is given by the formula

M = <em>mv</em>

<em />

Since both objects have the same velocity <em>v, </em>it is clear that the object with the bigger mass will have the greater momentum

6 0
2 years ago
If during the submerged weighing procedure air bubbles were to adhere to the object, how would the experimental results be affec
Mazyrski [523]

Answer:

see from this analysis, the apparent weight of the body is lower due to the push created by the air brujuleas

Explanation:

We will propose this exercise using Archimedes' principle, which establishes that the thrust on a body is equal to the volume of the desalted liquid.

          B = ρ g V

The weight of a submerged body is the net force between the weight and the thrust

          F_net = W - B

we can write the weight as a function of the density

          ρ_body = m / V

         m =  ρ_body V

         W = mg

         W =  ρ _body g V

we substitute

         F_net= ( ρ_body -  ρ _fluid) g V

In general this force is directed downwards, we can call this value the apparent weight of the body. This is the weight of the submerged body.

          W_aparente = ( ρ_body -  ρ _fluid) g V

If some air bubbles formed in this body, the net force of these bubbles is

         F_net ’= #_bubbles ( ρ_fluido -  ρ_air) g V’

this force is directed upwards

whereby the measured force is

         F = W_aparente - F_air  

           

As we can see from this analysis, the apparent weight of the body is lower due to the push created by the air brujuleas

6 0
3 years ago
A 9500 kg boxcar traveling at 14 m/s strikes a stationary second car. The two stick together and move off with a speed of 6.0 m/
jasenka [17]

<u>Answer:</u> The mass of the second car is 12666.7 kg

<u>Explanation:</u>

To calculate the mass of car, we use the equation of law of conservation of momentum, which is:

m_1u_1+m_2u_2=(m_1+m_2)v

where,

m_1 = mass of car 1 = 9500 kg

u_1 = Initial velocity of car 1 = 14 m/s

m_2 = mass of car 2 = ? kg

u_2 = Initial velocity of car 2 = 0 m/s

v = Final velocity = 6.0 m/s

Putting values in above equation, we get:

(9500\times 14)+(m_2\times 0)=(9500+m_2)6.0\\\\m_2=\frac{9500\times 14}{6}-9500=12666.7kg

Hence, the mass of the second car is 12666.7 kg

6 0
4 years ago
If you measured all the energy related to motion and all the stored energy in the particles of a substance, which would you be m
ivolga24 [154]
<span>If you measured all the energy related to motion and all the stored energy in the particles of a substance, you would be measuring thermal energy. The correct option among all the options that are given in the question is the last option or option "C". I hope that the answer has come to your great help.</span>
5 0
3 years ago
Read 2 more answers
The equation of a wave is represented by: Y = 0.005sin 2π(0.5x – 200t) where x and y are in meters and t in seconds. Find its i.
lys-0071 [83]

Answer:

See solution below

Explanation:

The standard equation of a wave is represented by: Y = Asin 2π(x/λ – ft)

A is the amplitude

λ is the wavelength

f is the frequency

t is the time

Comparing the standard with the given equation Y = 0.005sin 2π(0.5x – 200t)

i) A = 0.005m

Amplitude is 0.005m

ii) ω = 2πf

ω = 2π(200)

ω = 400π rad/s

iii) ω = 2πf

400π = 2πf

200 = f

Swap

f = 200Hertz

iv) Period = 1/f

Period = 1/200

Period = 0.005secs

v) wave number  =

vi) Wavelength λ

0.5x = x/λ

0.5 = 1/λ

λ  = 1/0.5

λ = 2m

vii) velocity - fλ

velocity = 200 * 2

velocity = 400m/s

7 0
3 years ago
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