True or false: the speed of the wave is determined by multiplying the wavelength by the frequency

Answers

Answer 1

Answer:
Well, that's not the only way to determine the wave's speed, but
multiplying those two quantities will always give you the speed.
Sure enough.

Answer 2

Answer: yes, it is true. Multiplying wavelength and frequency gives you the speed

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You are a passenger in a truck that gets stuck in mud. You and the driver use a tree branch as a lever to lift up the truck. You apply an effort force of 600 N to the branch. The back of the truck weighs 2400 N. What is the mechanical advantage of the branch-lever?

You're driving down the highway late one night at 19 m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s , and the maximum deceleration of your car is 10 m/s² . How much distance is between you and the deer when you come to a stop? What formulas do you use?

Answers

Answer:

x= x0 + v0t+ 1/2at^2

Explanation:

One proven risk of GM crop is?a. the escape of GM genes into non-GM crops.
b. the risk of cancer associated with eating GM food.
c. increased resistance of insects to pesticides because of the pesticides resistance of GM crops.
d. the loss of consumer support.

Answers

The only answer can be a. The escape of GM genes into non-GM crops. There is no evidence supporting that genetically modified crops cause mutation into cancer in the consumer. GM crops are altered not to be resistant to pesticides, but to be resistant to the best themselves, eliminating the need for spray on pesticides which the organisms might become accustomed to. The only reason why consumer support may be lost is due to myths and people who cause a fuss about genetically modified produce. There is no scientific evidence that the crops have negative effects. There is an idea of conservation related to harlume crops, because GM crops will be the dominant DNA should the plants breed which is why the answer is A.

A 9250 kg bridge going east-west is supported by two pillars. The bridge is 47.0 m long with a pillar 5.0m from the west end and 10 meters from the east end. How much force is applied on each of the pillars? Answer: 39,023 N and 52,477 N

Answers

N/B

Kindly find attached the sketch and the free body diagram solution to the problem

Explanation:

This problem bothers on the moments of forces

Moment is the turning effect of a force about a point. It is the product of force times perpendicular distance from the point of action

A wrench reduces the force needed to tighten a bolt. For this statement to be true, the wrench _____.

Answers

Answer:

Increases the input force and decreases the input distance

Explanation:

When a force is applied over a given distance, there is an inverse relationship between the applied force and distance. Example is a tommy bar, when the length increases the force required decreases. This principle is applied to this wrench.

It is B, I honestly didn't know

There is little sunlight at high latitudes during the winter, so few crops can grow even if temperatures are regulated. To address this problem, special lamps can be used in greenhouses.These lamps allow plants to grow during the winter months. Scientific knowledge of which topic was necessary to solve this problem?

Answers

Answer;

the colors of light that plants require for photosynthesis

Explanation;

The color of light used for photosynthesis depends on the pigment in the plant. For example, green plants with chlorophylls and carotenoids have a maximum activity with violet-blue and red light.

White light contains various colors, including red, orange, yellow, green, blue, indigo and violet. When plants harvest light for photosynthesis, they only absorb a few colors and reflect the rest. Plants appear green because chlorophyll absorbs other colors and reflects green.

Answer:

the colors of the light that plants require for photosynthesis

Explanation:

pretty sure im right

How can we run out of energy if energy cannot be created or destroyed?

Answers

Excellent question !
When people say "run out of energy", what they really mean is: run out of the easiest substances to get energy FROM ... coal, oil, and wood.

you don't run out of energy, you run out of USABLE energy. That may or may not happen, if humans somehow manage to become a type two civilization, it's almost never happening, because if a civilization becomes type two, they can harvest all of the energy produced by their sun. And if the human civilization becomes a type two, they're going to become type 3 well before the sun runs out of gases. If we become a type 3, we can use all energy from every part of the universe.

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