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luda_lava [24]
2 years ago
15

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A horizontal force of 2.5 N is applied o

n the block. Calculate the force of friction between the block and the floor.​
Physics
1 answer:
Masja [62]2 years ago
3 0

Answers is  F=7.84 N

Friction force resists the effect of horizontal force and trying to approch to a limiting force.

we have formula for limiting friction force between block and floor

               F=Ц N

where N=mg

putting values we get answer.

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Unlike hard disks, which use magnetic charges to represent 1s and 0s, _____ use reflected light.
dimaraw [331]

Answer:

Unlike hard disks, which use magnetic charges to represent 1s and 0s, Compact Disks, DVD's or Blue Rays use reflected light.

Explanation:

The way CD's work is that they are hit by a laser beam which is reflected on the surface of the disc. These disks have some valleys and mountains that reflect light differently so the CD player will interpret these differences in reflection as data which will then be turned into music, videos or computer files.

5 0
2 years ago
What charge appears on each plate of a 10.0 μF parallel plate capacitor, when it is charged to 110 V?
elena-14-01-66 [18.8K]

Answer:

charge, q = ± 1.1 mC

Given:

Capacitance, C = 10.0\micro F = 10.0\times 10^{- 6} F

Voltage, V = 110 V

Solution:

The charge on the capacitor plates can be calculated by using the definition of capacitance as :

q ∝ V

where

q = charge

V = potential difference or Voltage

Therefore,

q = CV

Now, charge, q :

q = 10.0\times 10^{- 6}\times 110 = 1100\micro C = 1.1 mC

Therefore, the charge on the positive plate is:

q = + 1.1 mC

the charge on the negative plate is:

q = - 1.1 mC

8 0
2 years ago
A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle
Jet001 [13]

Answer:

-7.03645640575 Nm²/C

2.34548546858 Nm²/C

Explanation:

S = Surface area

Electric flux through the base is given by

\phi_b=-\int Eds\\\Rightarrow \phi_b=-ES\\\Rightarrow \phi_b=-260\dfrac{\sqrt{3}}{4}0.25^2\\\Rightarrow \phi_b=-7.03645640575\ Nm^2/C

The electric flux through the base is -7.03645640575 Nm²/C

Inside the tetrahedron there is no charge so total flux will be zero

\phi_b+3\phi_s=0\\\Rightarrow \phi_s=-\dfrac{\phi_b}{3}\\\Rightarrow \phi_s=-\dfrac{-7.03645640575}{3}\\\Rightarrow \phi_s=2.34548546858\ Nm^2/C

The electric flux through the sides is 2.34548546858 Nm²/C

6 0
3 years ago
which has a greater speed, a heron that travels 600 m in 60 seconds or a duck that travels 60 m in 5 seconds
nasty-shy [4]
A duck has a greater speed
8 0
3 years ago
Read 2 more answers
Match the following vocabulary words with their definitions.
Licemer1 [7]

Answer: (1) Putrefaction

              (2) Biodegradable

               (3) Refuse.

Putrefaction refers to <u>decomposition of organic substances</u> usually dead plants' and animals' bodies <u>by microorganisms</u>.

Therefore, it matches with first definition that states the decay of organic matter caused by microorganisms.

Biodegradable substances are <u>decomposed by living organisms such as microorganisms.</u>

Therefore, it matches with the second definition that states susceptible to decomposition by living organisms.

Refuse refers to something which is <u>no longer useful</u>.

Therefore, it matches with the third definition of waste.

3 0
3 years ago
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