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nadya68 [22]
4 years ago
14

I need all the answers number 13-25

Physics
1 answer:
MA_775_DIABLO [31]4 years ago
7 0

13: 2 hydrogen 1 sulfur 4 oxygen
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Based on the speed, the questio the speed, the river, the speed of your boat relative to the water , and the distance across the
ANTONII [103]

Answer:

The velocity of a particle relative to S is equal to its velocity relative to S′ plus the velocity of S′ relative to S. We can extend Equation 4.35 to any number of reference frames. For particle P with velocities →vPA, →vPB, and →vPC in frames A, B, and C, →vPC=→vPA+→vAB+→vBC.

Explanation:

Resultant Velocity. Multiply the acceleration by the time the object is being accelerated. For example, if an object falls for 3 seconds, multiply 3 by 9.8 meters per second squared, which is the acceleration from gravity. The resultant velocity in this case is 29.4 meters per second.

6 0
3 years ago
List 3 things that magnetism and static electricity have in common
DiKsa [7]

Answer:

1. Static electricity has two charges magnetism has two poles.

2. Same charges and same poles repel and opposite charges and poles attract.

3. Static electricity is produced by charges(at rest) Magnetism is produced by charges(moving with uniform speed)

4 0
4 years ago
A lidar (laser radar) gun is an alternative to the standard radar gun that uses the Doppler effect to catch speeders. A lidar gu
nikitadnepr [17]

Answer:

v = 42.33 m/s

Explanation:

The time difference between two pulses that are emitted by Police is observed in the interval

\Delta t = 1.27 \times 10^{-7} s

now the speed of the electromagnetic wave is given as

c = 3 \times 10^8 m/s

now the distance traveled by them

d = c \times t

d = (3 \times 10^8)(1.27 \times 10^{-7})

d = 38.1 m

so distance of speeding vehicle covered for round trip of wave is 38.1 m

now for one trip it is given as d = 19.05 m

now the speed of the vehicle is given as

v = \frac{d}{t}

v = \frac{19.05}{0.450}

v = 42.33 m/s

5 0
3 years ago
An incandescent bulb is supplied with
Serga [27]

Answer:

Efficiency = 5%

Explanation:

Given that,

Supplies energy to the bulb = 100 J

Transferred energy by the bulb = 5 J

We need to find the efficiency of the bulb. It can be given by "

\eta=\dfrac{\text{useful energy out}}{\text{useful energy in}}\times 100\\\\=\dfrac{5}{100}\times 100\\\\=5\%

So, the efficiency of the bulb is 5%.

8 0
3 years ago
For stars in the main sequence, which color of stars tend to have higher absolute brightness?
PilotLPTM [1.2K]
White star and dwarf
6 0
3 years ago
Read 2 more answers
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