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olga55 [171]
3 years ago
10

How was Mendeleev's table different from Meyer's table? A. Mendeleev did not arrange according to chemical properties. B. Meyer

did not arrange by atomic mass but Mendeleev did. C. Meyer did not leave gaps while Mendeleev did. D. Mendeleev did not arrange according to physical properties.
Physics
1 answer:
olya-2409 [2.1K]3 years ago
7 0

Answer: C. Meyer did not leave gaps while Mendeleev did.

Explanation: Mendeleev's table was table different from Meyer's table because Meyer did not leave gaps while Mendeleev did.

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A kite is hovering over the ground at the end of a straight 38-m line. the tension in the line has a magnitude of 17 n. wind blo
postnew [5]

Let the tension in the thread will be at angle theta

now by force balance in  x and y directions we can say

17 cos\theta = 18 cos60

17 cos\theta = 9

\theta = 58.03 degree

now for the height of the kite we can use

h = L sin\theta

h = 38 sin58.03

h = 32.23 m

<em>so it will be at height 32.23 m from ground</em>

3 0
3 years ago
A diamond is cut such that the angle between its top surface and its bottom surface is α. For α=45∘, find the largest possible v
Reil [10]

Answer:

i = 61 degree

Explanation:

Given,

\alpha =45^{o}

Now, by the snell's law

sin\theta_c=\frac{1}{n}\\sin\theta_c=\frac{1}{2.450}\\\theta_c=24.09^o

Now,

Sin i / sin r = n 2 / n 1

sin i / sin r (45 - 24.09) = 2.45 / 1

i = 60.97 degree

4 0
3 years ago
A proton having an initial velvocity of 20.0i Mm/s enters a uniform magnetic field of magnitude 0.300 T with a direction perpend
nikitadnepr [17]

The radius of curvature of the proton's path while in the field is 66.67  × 10^{-2}.

b) Let R = radius curvature of protons path. Then,

relation b/w B, R, and v is: -

B = mv/eR\\R=mv/eB

R=\frac{1.6*10^{-27} * 20*10^{6}}{1.6*10^{-19}*0.3 }

R =66.67× 10^{-2}

Hence, the radius of curvature of the proton's path while in the field is 66.67 × 10^{-2}.

<h3>What do you mean by Magnetic field?</h3>

The magnetic influence on moving electric charges, electric currents and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field.  The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, like those utilized in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetized things.

To know more about Magnetic Field visit:

brainly.com/question/14848188

#SPJ4

5 0
1 year ago
2. What is the mass of an object that has 50000 J
muminat

Answer:

m= 666.67 or 667

Explanation:

KE= 50000 J

v= 75 m/s

m= ?

M= 50000 / 75

m= 666.67  or 667

3 0
2 years ago
A current of 15.0 A flows through an electric heater operating on 120 V. Compute the power consumption of the electric heater.
Rzqust [24]

Answer:

There will be 1800 W power consumption in heater

Explanation:

We have given current flowing in the heater I = 15 A

Voltage on which heater is operating V = 120 volt

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We know that power consumption is given by P = VI

So power consumption in heater = 120 × 15 = 1800 W

So there will be 1800 W power consumption in heater

5 0
3 years ago
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