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4vir4ik [10]
1 year ago
4

While watching the clouds pass by, you notice a European swallow

Physics
1 answer:
RoseWind [281]1 year ago
0 0

Answer:

magnitude of angular momentum of the coconut after t = 1 s is

L = 1930.4 kg m^2/s

Explanation:

Since it is dropped at the instant when it is at overhead position

so we will have

v_x = 6.61 m/s

now vertical speed of the coconut after t = 1 s

v_y = 0 - gt

v_y = -9.8 m/s

now its displacement in x direction is given as

x = 6.61 (1) = 6.61 m

height of the coconut after t = 1 s

y = 21.4 - \frac{1}{2}gt^2

y = 21.4 - \frac{1}{2}(9.81)(1^2)

y = 16.5 m

now angular momentum is given as

L = \vec r \times m\vec v

now we have

L = (6.61 \hat i + 16.5 \hat j)\times (11.1)(6.61 \hat i - 9.81\hat j)

L = -719.8 \hat k - 1210.6\hat k

so magnitude of angular momentum of the coconut after t = 1 s is

L = 1930.4 kg m^2/s

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6a. A special lamp can produce UV radiation. Which two statements
alexandr1967 [171]

Answer:

The correct options are:

B) They have the same wave speed as visible light

D) They have a lower frequency than gamma rays.

Explanation:

B) Ultraviolet rays, commonly known as UV rays, are a type of electromagnetic ways. As electromagnetic waves, in the layman's term, are all kinds of life that can be identified, all electromagnetic waves (UV rays, visible light, infrared, radio etc) all travel with the same velocity, that is the speed of light, given as v = 3 × 10⁸ m/s

D) The frequency of all electromagnetic rays can be found by electromagnetic spectrum (picture attached below).

We can clearly see in the picture that the frequencies of UV rays lie at about 10¹⁵ - 10¹⁶ Hz which is lower than the frequency of Gamma ray, which lie at about 10²⁰ Hz.

4 0
2 years ago
An RL series circuit is connected to an ac generator with a maximum emf of 20 V. If the maximum potential difference across the
Rama09 [41]

If the maximum emf of the ac generator is 20 V and the maximum potential difference across the resistor is 16 V Then the maximum potential difference across the inductor is 4 V.

Calculation:

Step-1:

It is given that the RL circuit is connected to a 20 V ac generator. The maximum potential difference across the resistor is 16 V. It is required to find the maximum potential drop across the inductor.

Step-2:

The maximum emf of the generator is equal to the sum of the maximum potential difference across the resistor and the maximum potential difference across the inductor.

Therefore,

The maximum potential difference across the inductor + Maximum maximum potential difference across the resistor = Maximum emf of the generator

Thus,

Maximum maximum potential difference across the inductor + 16 V = 20 V

Therefore,

Maximum maximum potential difference across the inductor = 20 V - 16 V = 4 V

Learn more about potential differences across resistor and inductor here,

brainly.com/question/15715072

#SPJ4

5 0
11 months ago
A spherically shaped balloon has a radius of 12.5 m, and is filled with helium. How much extra mass can a cargo lift, assuming t
rusak2 [61]

Answer

Radius of the Balloon = 12.5 m

the skin and the cargo of the balloon have a mass = 850 kg

Volume of balloon=\dfrac{4}{3}\pi r^3

                               =\dfrac{4}{3}\ \pi\times 12.5^3

                               =8181.20 m³

Mass the ballon can carry= volume x [density of air-density of helium]

                              =8181.2 x [ 1.29 - 0.179 ]  

                               =9089 kg  

Mass of cargo = 9089 - 850

                        = 8239 kg

8 0
1 year ago
If you set up an experiment with two different independent variables, then the results would be_____.
aalyn [17]

Answer:inconclusive

Explanation:

5 0
1 year ago
An observer on Earth sees spaceship 1 fly by at 0.80c. 6.0 years later, the observer on Earth sees spaceship 2 fly by at 0.80c,
Lemur [1.5K]

Answer:

t_2=10

Explanation:

From the question we are told that:

Velocity of both spaceships V=0.8c

Time t_1=6

Generally the equation for time of spaceship 2 through earth is mathematically given by

t_2=\frac{t_1}{\sqrt{1-v^2}}

t_2=\frac{6}{\sqrt{1-0.8^2}}

t_2=10

5 0
1 year ago
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