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3 years ago

14

where would information on the chemical and physical properties of a specific chemical be located in a laboratory or in the work

place?

1 answer:

goldenfox [79]3 years ago

8 0

Answer:

Both

Explanation:

You might be interested in

Does Earth´s magnetic field move?

AlekseyPX

Answer:

Yes it does.

Explanation:

"The North Magnetic Pole moves over time due to magnetic changes in Earth's core. " - Wikipedia.

It does move around as the magnetic north does.

6 0

3 years ago

A fire helicopter carries a 700-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant spee

rodikova [14]

Answer:

F = 50636.873 N

Explanation:

given,

bucket of water = 700-kg

length of cable = 20 m

Speed = 40 m/s

angle of the cable = 38.0°

let air resistance be = F

tension in rope be = T

T cos 38° = m×g..................(1)

$T sin 38^0= \dfrac{mv^2}{l} + F$ ..........(2)

equation (1)/(2)

$tan 38^0 =\dfrac{\dfrac{mv^2}{l} + F}{mg}$

$0.781=\dfrac{\dfrac{700\times 40^2}{20} + F}{700\times 9.8}$

F = 50636.873 N

Hence the force exerted on the bucket is equal to F = 50636.873 N

5 0

3 years ago

The melting point of a substance is the same as its _____ point.

kirza4 [7]

Answer:

Boiling point

Explanation:

5 0

3 years ago

What is the difference between multiples and sub multiple units?

il63 [147K]

Answer:

multiple is the product of any quantity and an integer. where a sub multiple of a main unit is a unit, named by prefixing the main unit, defined as the quotient of the main unit by an integer

Explanation:

7 0

3 years ago

A coil is wrapped with 332 turns of wire on the perimeter of a circular frame (of radius 30 cm). Each turn has the same area, eq

almond37 [142]

Answer:

$E=84.5V$

Explanation:

From the question we are told that:

Number of Turns $N=332turns$

Radius $r= 30cm$

Field Change $B=56mt-29mt=27mt$

Time $t=63ms$

Generally the equation for Magnetic Field is mathematically given by

$\frac{dB}{dt}=\frac{27*10^{-3}}{29*10^{-3}}$

$\frac{dB}{dt}=0.9T/s$

Generally the Flux at 332 turns is mathematically given by

$\phi=N*A*B$

Generally the equation for Area of coil is mathematically given by

$A=\pi*r^2$

$A=\pi*(r*10^{-2})^2$

Since

$\phi=332*\pi*(\theta*10^{-2})^2*B$

Therefore

$\frac{d \phi}{dt}=332*\pi*(900*10^{-4}*\frac{dB}{dt}$

Generally the equation for emf Magnitude is mathematically given by

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

$E=332*\pi*(900*10^{-4}*0.9$

$E=84.5V$

4 0

3 years ago