Ask question

Ask question

All categories

3 years ago

11

PLZZZ HURRY a student is performing experiments on a particular substance which statement is an observation of a chemical proper

ty of the substance
a- it sinks WILL MARK BRAINLEST PLZZZZ HURRY
b-it freezes
c-it reacts with air
d- its viscosity increases

2 answers:

Katena32 [7]3 years ago

7 0

It’s d all the other answer would not be a chemical property

Scilla [17]3 years ago

5 0

Answer:

C it reacts with air

Explanation:

You might be interested in

What is the length of a simple pendulum with a period of 11.5 s?

givi [52]

Using the equation for period length for a pendulum, you get 32.829 meters.

4 0

3 years ago

The magnetic field at the earth's surface can vary in response to solar activity. During one intense solar storm, the vertical c

Natalka [10]

Answer:

$EMF = 1684.67 Volts$

Explanation:

As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time

So we can say

$EMF = \frac{d\phi}{dt}$

now we have

$\phi = BA$

here since magnetic field is constant so we have

$EMF = A\frac{dB}{dt}$

now we have

$A = (190 \times 10^3)(190 \times 10^3)$

$A = 3.61 \times 10^{10} m^2$

now we have

$EMF = 3.61\times 10^{10} (\frac{2.8 \times 10^{-6}T}{60 s})$

$EMF = 1684.67 Volts$

6 0

3 years ago

3. The direction of the centripetal force acting on a ball on a string being spun in a circle around a person is

ruslelena [56]

D. center seeking. Good Luck

4 0

3 years ago

Read 2 more answers

Which type of thermal energy transfer occurs mostly in fluids?

Dmitry_Shevchenko [17]

The answer is:

Heat transfer.In order to heat up water there has to be a way that the heat puts energy into the water,which make is rise in temperature.

I hope this helps :D

7 0

3 years ago

Read 2 more answers

90cm uniform lever has a load 30N suspended at 15cm from one of it's end. If the fulcrum is at the center of gravity. The force

solniwko [45]

Answer: F = 20 N

Explanation:

I will ASSUME that the fulcrum is at the center of gravity of the lever arm, This means that the lever arm itself creates no moment about the fulcrum because there is no moment arm for that particular force.

To solve, we sum moments about any convenient point to zero (zero because there is no acceleration in the F = ma equation)

The easiest convenient point is the fulcrum

30((90/2) - 15) - F(90/2) = 0

30(30) = F(45)

F = 900/45 = 20 N

3 0

2 years ago