what determines the path that an object in projectile motion follows
ANSWER:
C) Gravity & Inertia.
Choices
A) gravity only
B) inertia and air resistance
C) gravity and inertia
D) gravity and air resistance
calculate the speed of a sound wave produced from a guitar if it creates 38 compressions each second with 0.57 meter wavelength
a scientist wants to analyze signals from outer space. Her lab has sensors to dect sound waves, radio waves, and seismic waves. Which of these sensors will provide the best information?
Final answer:
The most suitable sensor for analyzing signals from outer space is radio wave sensors due to their economical production cost and efficiency in transmitting through interstellar space and atmospheres, thus providing valuable information about the sources of the waves.
Explanation:
In analyzing signals from outer space, the best sensor to use among sound waves, radio waves, and seismic waves would be radio wave sensors. Radio waves are the lowest-frequency and lowest-energy band of the electromagnetic spectrum, making them not only inexpensive to produce but also adept at traveling through interstellar dust, gas, and planetary atmospheres without significant absorption.
This capability is crucial for receiving unimpeded signals from space. The information collected through radio waves can reveal the chemistry and physical conditions of their sources. Moreover, radio waves are already extensively used in various communication systems on Earth. Therefore, in the context of SETI (Search for Extraterrestrial Intelligence) or any other form of cosmic study, radio waves are the most suitable and effective for gathering data from outer space.
A 12 volt parallel circuit is drawing 2 amps what is the total amount of power consumed?
the gravitational force between two objects increase as the mass increases or distance decreases
the gravitational force between two objects increase as the mass increases or distance decreases
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explain why electromagnetic radiation sometimes act as a wave and sometimes as a stream of particles?
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A wire delivers 12.0 C of charge in 4.0 s.
What is the current in the wire?
A parent isotope has a half life of 1 million years. If a rock contained 20 mg of the parent isotope when it formed, how much parent isotope would be left after 2 million years?
the half-life of iodine-131 is 8 days. if a sample originally contains 0.96 g of the isotope, how much will remain after 16 days
After 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.
How the half-life of iodineThe half-life of iodine-131 is 8 days, which means that every 8 days, the amount of iodine-131 in a sample will be reduced by half.
After 16 days, which is two half-lives, the amount of iodine-131 remaining can be calculated as follows:
First half-life: 0.96 g / 2 = 0.48 g remaining
Second half-life: 0.48 g / 2 = 0.24 g remaining
Therefore, after 16 days, there will be approximately 0.24 grams of iodine-131 remaining in the sample.
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A remote control car travels at a uniform speed of 3.5 m and reaches its destination in five minutes. How far did the remote control car travel
Two footballs (A & B) are thrown with the same amount of force. Football A has a greater mass. Describe the acceleration for each football.
In a closed circuit containing one resistor and a battery, if the voltage in the battery increases, the current going through the resistor increases. Why does this occur?
In a closed circuit there is a battery and resistor, from ohm's law if the voltage in the battery increases then the current in the resistor will also increase.
What is Ohm's law?The connection between current, voltage, and resistance is described by Ohm's law. The voltage or potential difference across numerous materials determines how much constant current flows through them. As a result, if the voltage V (measured in volts) across two ends of a wire made of one of these substances is tripled, the current I (measured in amps) also triples, and the ratio V/I stay the same.
The resistance, R, for a specific material is it's V/I ratio and is expressed in ohms. Over extremely wide voltage and current ranges, the resistance of substances for which Ohm's law is applicable remains constant. The mathematical model for Ohm's law is V/I = R.
Therefore, from the formula of ohm's law if the voltage in the circuit will increase then the current will also going to increase with it.
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What metric measure would be best to use when measuring the amount of water given to a plant
The best metric is a combination of volume, frequency, soil moisture, evapotranspiration rate, and plant growth and health observation.
When measuring the amount of water given to a plant, it's crucial to choose a metric that accurately reflects the plant's needs and ensures optimal growth. The best metric to use for this purpose is:
1. **Volume of Water**: Measure water in milliliters or liters to quantify the actual amount provided to the plant.
2. **Frequency**: Track how often water is given, whether daily, weekly, or based on the plant's specific requirements.
3. **Moisture Content**: Use a soil moisture meter to gauge the water content in the soil around the plant's roots.
4. **Evapotranspiration Rate**: Consider the rate at which water evaporates from the soil and is transpired by the plant. This can help determine the water loss and replenishment needed.
5. **Plant Growth and Health**: Ultimately, the best measure is the plant's response. Monitor its growth, foliage appearance, and overall health to adjust watering practices accordingly.
By combining these metrics, you can ensure the plant receives the appropriate amount of water for optimal growth and health.
Makori drew the diagram below to show how a light microscope works.
Which best describes how Makori can correct the error in his diagram?
A) Change the label “Virtual image from objective lens” to “Real image from objective lens.”
B) Switch the locations of the eyepiece lens and the objective lens.
C) Move the light so it is shining downward from the eyepiece lens toward the objective lens.
D) Replace “Convex” with “Concave” on the label for the eyepiece lens.
Makori can correct the error in his diagram by changing the label “Virtual image from objective lens” to “Real image from objective lens.”
What are the two types of lenses?Concave lensConvex lensWhich lens is used in light microscope?Convex lens is used in light microscope.
What is the difference between concave lens and convex lens?A concave lens is thinner in the middle and thicker at the edges. A convex lens is thicker in the middle and thinner at the edges.What is the objective of convex lens?They focus light for a clear picture.It is used in front of the eye to bend the incoming light.Focal point shortens and the light focuses properly on the retina.Thus , the real and inverted image is produced by objective lens of light microscope, which goes through convex lens of eyepiece.Therefore, Makori can correct the error in his diagram by changing the label “Virtual image from objective lens” to “Real image from objective lens.”
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What si the name of the state change water is going through as it boils?
Match the adaptations with their benefits.Match the adaptations with their benefits.
the wasp’s stinger
the peacock’s bright plumage
the owl’s large eyes
the bear’s fur
help to search for food
arrowBoth
protection against predators
arrowBoth
attraction to obtain a mate
arrowBoth
maintain homeostasis
arrowBoth
Answer: the wasp’s stinger - protection against predators
the peacock’s bright plumage - attraction to obtain a mate
the owl’s large eyes - help to search for food
the bear’s fur - maintain homeostasis
Explanation:
An adaptation can be define as any change that occurs in the morphology, physiology and genetic make up of the organism which makes it suitable for survival in it's natural environment even in adverse conditions and reproduce.
The following are the adaptations with their benefits.
the wasp’s stinger - protection against predators
The wasp stinger generally exhibit toxic substance or allergy causing agent which the wasp use when it finds a predator around it.
the peacock’s bright plumage - attraction to obtain a mate
The male peacock exhibit bright and showy feathers which is a phenotypic advantage for attraction of female mates for copulation. This phenomena is called as sexual selection.
the owl’s large eyes - help to search for food
The owl's large eyes allows the night vision. There are many rods and cones present in the eyes of the owl so as to allow better vision in night and allow it to observe and capture prey.
the bear’s fur - maintain homeostasis
The bear's fur are insulating in nature that means it does not allow the entry of external air. Hence, helps in retaining the heat in the body in otherwise cold environment. Therefore, helps in maintaining the homeostasis (the tendency of the body retain it's constant internal environment as compared to changing external environment).
what two forces are there when you skydive
When a book is resting on a level table and you are not pushing on it , is there a frictional force between the book and table ?
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After you rub a balloon on your hair it might stick to a wall. Why? Be specific.
as the balloon is rubbed on hair, due to friction, the electron transfer takes place between them and as a result balloon acquire some charge. The balloon when touched with the wall sticks to it because of force of attraction between balloon and wall. the wall must have the charge opposite to what the balloon has on it. we know that unlike charge attract hence the balloon sticks to the wall.
If you lift a 250 N weight 3 meters off of the ground, how much work have you done in joules?
What is the abbreviation for the SI unit for electric potential
Batteries should only be removed from the premises by a licensed battery hauler for recycling. A) True B) False
True
Explanation:Batteries carry acids and electrolytes which if comes in contact with human skin can cause severe effects and sometimes it can become fatal. Therefore a great care is needed while replacing batteries. To avoid any danger and harmful circumstances, batteries should always be replaced by a licenced battery haulers for recycling.
The difference in the composition of the terrestrial planets and the gas giants can be explained by the different condensation ____________________ in the regions near and far from the sun during the formation of the solar system.
n the picture of a planet in orbit around its star area a is double that of area b. What is true of the time the planet takes to travel A1A2 as compared to B1B2
a blank is an electric circuit that produces a magnetic field.
whats the blank?
Answer:
Explanation: A coil is an electric circuit that produces a magnetic field
How much heat is absorbed by a 66g iron skillet when its temperature rises from 7oC to 20oC?
Plants use a process called cellular respiration in order to obtain energy from the food they produce during photosynthesis. When a plant undergoes cellular respiration, it...
Question 5 options:
produces sugar inside its cells.
breaks down the sugar inside its cells.
releases oxygen through its stomata.
absorbs sunlight through its chloroplasts.
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