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3 years ago

How is it possible for two objects to have the same momentum, but different velocities?

1 answer:

8 0

Answer: momentum has the same direction as that of velocity but when 2 bodies with the same linear momentum & different velocities it has different masses because a vector quantity is represented by a cross product of mass and velocity of object .

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The left end of a long glass rod 8.00 cm in diameter, with an index of refraction 1.60, is ground to a concave hemispherical sur

sp2606 [1]

Answer:

a) q = -9.23 cm, b) h’= 0.577 mm , c) image is right and virtual

Explanation:

This is an optical exercise, where the constructor equation should be used

1 / f = 1 / p + 1 / q

Where f is the focal length, p the distance to the object and q the distance to the image

A) The cocal distance is framed with the relationship

1 / f = (n₂-1) (1 /R₁ -1 /R₂)

In this case we have a rod whereby the first surface is flat R1 =∞ and the second surface R2 = -4 cm, the sign is for being concave

1 / f = (1.60 -1) (1 /∞ - 1 / (-4))

1 / f = 0.6 / 4 = 0.15

f = 6.67 cm

We have the distance to the object p = 24.0 cm, let's calculate

1 / q = 1 / f - 1 / p

1 / q = 1 / 6.67 - 1/24

1 / q = 0.15 - 0.04167 = 0.10833

q = -9.23 cm

distance to the negative image is before the lens

B) the magnification of the lenses is given by

M = h ’/ h = - q / p

h’= - q / p h

h’= - (-9.23) / 24.0 0.150

h’= 0.05759 cm

h’= 0.577 mm

C) the object is after the focal length, therefore, the image is right and virtual

6 0

3 years ago

As temperature increases, what happens to the density of ocean water? A. changes unpredictably B. decreases C. does not change D

Lelu [443]

As the temperature of water increases, the density of water will decrease.

4 0

3 years ago

Which of the following planets rotates in the opposite direction than the other planets? Venus Neptune Saturn Uranus

pogonyaev

Hello,

The answer is option A "Venus".

Reason:

The planet Venus spins the wrong way many scientists are not sure why. Its not options B, C, or D because these planets spin the same way the as each other. (besides Venus) Therefore the answer is option A.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

5 0

3 years ago

Read 2 more answers

An airplane flies 1350km in 2 1/4 hours. What is its average speed in kilometers per hour?

Brut [27]

600km since it would be 1350 divided by 2.25

8 0

3 years ago

Use the circuit diagram to determine the voltage drop across the 8 Ω resistor.

Rainbow [258]

First we need to find the current flowing in the circuit. The three resistors are in series, so the equivalent resistance of the circuit is the sum of the three resistances:
$R_{eq} = R_1 + R_2 + R_3 = 10.0 \Omega + 8.0 \Omega +6.0 \Omega = 24.0 \Omega$

Then we can apply Ohm's law to the whole circuit, to find the current flowing:
$I= \frac{V}{R_{eq}}= \frac{12 V}{24.0 \Omega}=0.5 A$

And now we can apply Ohm's law to the resistor of $8.0 \Omega$ to find the voltage drop across it:
$V_{8\Omega} =IR=(0.5 A)(8.0 \Omega)=4 V$

8 0

3 years ago

Read 2 more answers