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3 years ago

Didifference between uniform and variable velocity

2 answers:

4 0

ᴜɴɪꜰᴏʀᴍ ᴠᴇʟᴏᴄɪᴛy ᴅᴏᴇꜱ'ɴᴛ ᴄʜᴀɴɢᴇ ᴡɪᴛʜ ᴛɪᴍᴇ , ᴡʜɪʟᴇ ᴠᴀʀɪᴀʙʟᴇ ᴠᴇʟᴏᴄɪᴛy ᴄʜᴀɴɢᴇꜱ ᴡɪᴛʜ ʀᴇꜱᴩᴇᴄᴛ ᴛᴏ ᴛɪᴍᴇ . ᴠᴇʟᴏᴄɪᴛy ɪꜱ ᴅᴇꜰɪɴᴇᴅ ᴀꜱ ᴛʜᴇ ᴄʜᴀɴɢᴇ ɪɴ ᴩᴏꜱɪᴛɪᴏɴ ᴏꜰ ᴀ ʙᴏᴅy ɪɴ ᴏɴᴇ ᴜɴɪᴛ ᴏꜰ ᴛɪᴍᴇ ᴏʀ ᴛʜᴇ ᴅɪꜱᴩʟᴀᴄᴇᴍᴇɴᴛ ᴏꜰ ᴛʜᴇ ʙᴏᴅy ɪɴ ᴏɴᴇ ᴜɴɪᴛ ᴏꜰ ᴛɪᴍᴇ .

ꜱɪɴᴄᴇ ᴠᴇʟᴏᴄɪᴛy ᴄʜᴀɴɢᴇꜱ ɪᴛꜱ ᴩᴏꜱɪᴛɪᴏɴ ɪɴ ᴏɴᴇ ᴜɴɪᴛ ᴏꜰ ᴛɪᴍᴇ , ɪᴛ ʜᴀꜱ ᴀ ꜱᴩᴇᴄɪꜰɪᴄ ᴅɪʀᴇᴄᴛɪᴏɴ.

ʜᴏᴩᴇ ɪᴛ ʜᴇʟᴩꜱ yᴏᴜ !!

Simora [160]3 years ago

3 0

Answer:

Uniform velocity is scalar , while variable velocity is vector

Explanation: Uniform velocity and variable velocity is that a body moving with uniform velocity has zero acceleration, while a body that is moving with variable velocity has some acceleration. Uniform velocity is the vector quantity while non-uniform or variable velocity is a scalar quantity

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A __________ provides a visual summary of the improvements that a data mining project provides on a binary classification proble

babymother [125]

Answer:

Option (B)

Explanation:

A lift chart usually refers to a graphical representation that is mainly used in order to improve the drawbacks of a mining model by making a comparison with any random guess, and also helps in determining the changes that occur in terms of lift scores.

It describes the binary classification of the problems associated with the mining activity. This type of chart is commonly used to differentiate the lift scores for a variety of models, and picking the best one out of all.

Thus, the correct answer is option (B).

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3 years ago

Think about the electricity sent to your home from a power plant. How does the voltage of the electricity that leaves the plant

tatiyna

C. High voltage to low voltage

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3 years ago

What current flows through a 2.56-cm-diameter rod of pure silicon that is 20.0 cm long, when 1.00 ✕ 103 V is applied to it? (Suc

vfiekz [6]

Answer:

Current, I = 0.0011 A

Explanation:

It is given that,

Diameter of rod, d = 2.56 cm

Radius of rod, r = 1.28 cm = 0.0128 m

The resistivity of the pure silicon, $\rho=2300\ \Omega-m$

Length of rod, l = 20 cm = 0.2 m

Voltage, $V=1\times 10^3\ V$

The resistivity of the rod is given by :

$R=\rho\dfrac{L}{A}$

$R=2300\ \Omega-m\dfrac{0.2\ m}{\pi (0.0128\ m)^2}$

R = 893692.30 ohms

Current flowing in the rod is calculated using Ohm's law as :

V = I R

$I=\dfrac{V}{R}$

$I=\dfrac{10^3\ V}{893692.30\ \Omega}$

I = 0.0011 A

So, the current flowing in the rod is 0.0011 A. Hence, this is the required solution.

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3 years ago

A 100-N force causes an object to<br> accelerate at 2 m/s/s. What is the<br> mass of the object?

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Answer:

$50\; \rm kg$ .

Explanation:

By Newton's Second Law, the acceleration $a$ of an object is proportional to the net force $\sum F$ on it. In particular, if the mass of the object is $m$ , then

$\sum F = m \cdot a$ .

Rewrite this equation to obtain:

$\displaystyle m = \frac{\sum F}{a}$ .

In this case, the assumption is that the $100\; \rm N$ force is the only force that is acting on the object. Hence, the net force $\sum F$ on the object would also be

Make sure that all values are in their standard units. Forces should be in Newtons (same as $\rm kg \cdot m \cdot s^{-2}$ , and the acceleration of the object should be in meters-per-second-squared ( $\rm m \cdot s^{-2}$ ). Apply the equation $\displaystyle m = \frac{\sum F}{a}$ to find the mass of the object.