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pishuonlain [190]
3 years ago
13

Didifference between uniform and variable velocity ​

Physics
2 answers:
Nat2105 [25]3 years ago
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 thin aluminum rod lies along the x-axis and has current of I = 16.0 A running through it in the +x-direction. The rod is in th
coldgirl [10]

Answer:

a) The magnitude of the magnetic field = 7.1 mT

b) The direction of the magnetic field is the +z direction.

Explanation:

The force, F on a current carrying wire of current I, and length, L, that passes through a magnetic field B at an angle θ to the flow of current is given by

F = (B)(I)(L) sin θ

F/L = (B)(I) sin θ

For this question,

(F/L) = 0.113 N/m

B = ?

I = 16.0 A

θ = 90°

0.113 = B × 16 × sin 90°

B = 0.113/16 = 0.0071 T = 7.1 mT

b) The direction of the magnetic field will be found using the right hand rule.

The right hand rule uses the first three fingers on the right hand (the thumb, the pointing finger and the middle finger) and it predicts correctly that for current carrying wires, the thumb is in the direction the wire is pushed (direction of the force; -y direction), the pointing finger is in the direction the current is flowing (+x direction), and the middle finger is in the direction of the magnetic field (hence, +z direction).

3 0
3 years ago
Suppose you exert a 25-N force to lift a ball 0.4 m in 2 s. How much work is done?
Sergio [31]

work is force x distance = 25 x 0.4

= 2.5x4 = 10joules

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3 0
3 years ago
What is the mass of 3.70 L of water? Remember 1000 L = 1 m^3 (Unit=Kg)
xxMikexx [17]

Answer:

3.7kg

Explanation:

The following data were obtained from the question:

Volume = 3.7L

Mass =?

Next, we shall convert 3.7L to m³.

This is illustrated below:

1000L = 1m³

Therefore, 3.7L = 3.7/1000 = 0.0037m³

Now, we can obtain the mass of the water as shown below:

Density of water = 1000kg/m³

Volume of water = 0.0037m³

Mass of water =..?

Density = Mass /volume

1000kg/m³ = Mass /0.0037m³

Cross multiply

Mass = 1000Kg/m³ × 0.0037m³

Mass = 3.7Kg

Therefore, the mass of the water is 3.7Kg.

8 0
3 years ago
You are trying to decide between two new stereo amplifiers. One is rated at 130 W per channel and the other is rated at 200 W pe
NARA [144]

Answer:

The sound level will be 1.870 dB louder.

Explanation:

Given that,

Power = 130 W

Power = 200 W

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I_{dB}=10\log(\dfrac{I}{I_{0}})

For one amplifier,

I_{1}=10\log(\dfrac{130}{I_{0}})...(I)

For other amplifier,

I_{2}=10\log(\dfrac{200}{I_{0}})...(II)

For difference in dB levels

I_{2}-I_{1}=10\log(\dfrac{200}{I_{0}})-10\log(\dfrac{130}{I_{0}})

I_{2}-I_{1}=10\log(\dfrac{200}{I_{0}}\times\dfrac{I_{0}}{130})

I_{2}-I_{1}=10\log(\dfrac{200}{130})

I_{2}-I_{1}=1.870\ dB

Hence, The sound level will be 1.870 dB louder.

7 0
3 years ago
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n200080 [17]

Answer:

D) not swim in or drink the water from the stream

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Low pH means the water is acidic which is harmful to your skin as it can cause burns and irritations. So any means of contacting with water is not healthy. The damage to the skin happens as in acidic water it has more H+ than in the neutral water and the extra H+ ions can ionize the atoms  which are combined to form different compounds in the skin when in contact.

5 0
3 years ago
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