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3 years ago

Does frequency affect wavelength?

Physics

1 answer:

Vinil7 [7]3 years ago

6 0

Answer:

yeah

Explanation:

as wavelength increases frequency decreases and it goes the same for the opposite way

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A uniform stick has a mass of 4.42 kg and a length of 1.23 m. It is initially lying flat at rest on a frictionless horizontal su

nataly862011 [7]

10.7 rad/s is the final angular velocity of the stick.

Given:

Mass of the stick = 4.42 kg

Length of the stick = 1.23m

Force of impulse (I) = 12.8 N s

The linear velocity of the stick, $v=\frac{I}{m}$

$v=\frac{12.8 N.s (\frac{1 kg m/s^2}{1 N}) }{4.42 kg}$

$v$ $= 2.89 m/s$

Therefore, the final linear velocity of the stick is 2.89 m/s

∴ $w=\frac{12 Ir}{ml^{2} }$

$w=\frac{12 ( 12.8 N.s ) ( 46.4 cm)}{(4.42 kg) (1.23 m)^2}$

$w= \frac{12 (12.8 N.s) (46.4 cm) (\frac{10^-^2 m}{1 cm} )}{(4.42 kg) (1.23m)2}$

$w=10.7 rad/s$

Therefore, 10.7 rad/s is the final angular velocity of the stick.

Learn more about linear velocity here:

brainly.com/question/15154527

#SPJ4

5 0

2 years ago

What is the speed in km/min of a skater who travels a distance of 210 m in a time of 30 seconds

Artyom0805 [142]

Answer: 0.42 km/min

Explanation:

total distance traveled(in meters) = 210m

total distance traveled(in km) = 210 ÷ 1000 = 0.21 km

total time taken(in seconds) = 30 s

total time taken(in minutes) = 30 ÷ 60 = 0.5 s

speed =(distance traveled)÷(time taken)[in km/min] = 0.21 ÷ 0.5 = 0.42km/min

7 0

3 years ago

Lora (of mass 43.6 kg) is an expert skier. She starts at 3.6 m/s at the top of the lynx run, which is 67 m above the bottom. Wha

Likurg_2 [28]

Explanation:

As per the law of conservation of energy, the final mechanical energy of Lora is equal to its initial mechanical energy. So, when Lora is at the bottom of ski run then her potential energy will change into kinetic energy.

Hence, $E_{initial} = \frac{mv_{i}^{2}}{2} + mgh
$

$E_{final} = \frac{mv_{f}^{2}}{2}$

Now, final kinetic energy that will be at the bottom of the ski run is as follows.

Let, $E_{k} = E_{final}$

$E_{intial} = E_{final}$

$E_{k} = \frac{mv_{i}^{2}}{2} + mgh
$

= $\frac{(43.6 \times (3.6)^{2}}{2} + (43.6 \times 9.81 \times 67)$

= 282.53 + 28656.97

= 28939.502 J

Thus, we can conclude that her final kinetic energy at the bottom of the ski run is 28939.502 J.

3 0

3 years ago

A force has both a _____ and a _____. A. mass; direction B. magnitude; mass C. magnitude; direction

kipiarov [429]

C. magnitude & direction

3 0

3 years ago

Physical data is often used in the court system. In fact, police officers use radar to determine your speed when you are driving

Mashcka [7]

The driver is telling the truth, the radar gun must have been set incorrectly to record relative velocity.

The given parameters:

Speed of the driver observed by the stationary police officer, Vo = 44.7 m/s
Speed of the driver, V = 26.8 m/s.
Speed limit = 60 mph

The speed limit of the driver in meter per second is calculated as follows;

$= 60 \ \times \frac{miles}{hour} \times \frac{1609.34 \ m}{1 \ mile} \times \frac{1 \ hr}{3600 \ s}\\\\= 26.82 \ m/s$

From the speed limit, it is obvious that the driver's speed is within the limit. Thus, we can conclude that the driver is telling the truth, the radar gun must have been set incorrectly to record relative velocity.

Learn more about relative velocity here: brainly.com/question/17228388

6 0

2 years ago