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eduard
3 years ago
10

Elias observed a sample in the classroom. The sample was a liquid at room temperature. He performed a conductivity test and foun

d that it did not conduct electricity. Which classification would best fit the sample?
A) ionic
B) metal
C) nonmetal
D) salt
Physics
1 answer:
Liula [17]3 years ago
7 0

Answer:

B

Explanation:

Nonmetals are poor conduster to heat and electricity

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80% from burning fossil fuels

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When being unloaded from a moving truck, a 16.0- kilogram suitcase is placed on a flat ramp inclined at 40.0 o. When released fr
9966 [12]

Answer:

0.65812

Explanation:

m = Mass of suitcase = 16 kg

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g = Acceleration due to gravity = 9.81 m/s²

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f = Frictional force

The normal force is given by

N=mgcos\theta

In x direction

mgsin\theta-f=ma\\\Rightarrow f=mgsin\theta-ma\\\Rightarrow f=16\times 9.81\times sin40-16\times 1.36\\\Rightarrow f=79.13194\ N

Frictional force is given by

f=\mu N=\mu mgcos\theta\\\Rightarrow \mu=\dfrac{f}{mgcos\theta}\\\Rightarrow \mu=\dfrac{79.13194}{16\times 9.81\times cos40}\\\Rightarrow \mu=0.65812

The coefficient of kinetic friction between the suitcase and the ramp is 0.65812

8 0
3 years ago
a flat bed truck is carrying a crate up a 10.0 hill inn the picture. the coefficent of the static friction between the truck bed
almond37 [142]

Answer:

a = 0.711 m/s^2

Explanation:

As we know that truck is moving up the hill

So here we have two forces on the crate placed on the truck

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2) Friction force along the floor

Now here if the truck is moving with maximum possible acceleration so that there is no slipping of the crate

So here we will have

\mu mg cos\theta - mgsin\theta = ma

a = \mu g cos\theta - g sin\theta

a = (0.25)(9.81)cos10 - 9.81 sin10

a = 0.711 m/s^2

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rusak2 [61]

Answer:

Gravitational force between masses there is Gravitational force .

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A geologist wants to locate a horizontal coal bed on a soil-covered slope where soil creep is active. a distinctive sandstone be
Schach [20]

We are ask to know where is the location of the coal bed, in this given sentence when you need to analyze every words just to know where is the coal bed located.

 

To my understanding the coal bed is located just above the highest piece of sandstone seen in the soil.

7 0
3 years ago
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