Answer:
option 3 increasing the distance between the objects
why was Idi Amin labeled as one of the Africa's cruelest dictators
Answer: He was labeled as one of Africa's cruelest dictators because during his eight year reign many civilians were massacred. He drove out Uganda's Indian and Pakistani citizens and spent large amount of money on the military which led to the economic decline of the country.
Explanation:
Which of the following wave on the electromagnetic spectrum has more energy? Ultraviolet or x-rays?
Answer: ultraviolet
Explanation:
A piece of stone weigh 90 grams. When it lowered in measuring cylinder containing water. The final volume of water is 30 cubic centimetres. Calculate the density of the stone.
Answer:
3 gm / cm^3
Explanation:
Density = weight / volume
90 / 30 = 3 gm/cm^3
Answer asap! No links or weird answers pls. Thank you
An object with a mass of 5.4 kg has a force of 20.0 Newton’s applied to it. What is the resulting acceleration?
Answer:
Mass (m) = 5.4 kg
Force (f) = 20 N
Acceleration (a) = ?
Acceleration= m × a
[tex]m \times a \\ = 5.4 \times 20 \\ = 108 \: ms ^{ - 2} [/tex]
=> The resulting acceleration of the object is 108 m/s².
La velocidad de la luz es de 300 000 km/s, convertir a m/s.
ayudenme porfa
How is an equation described if the number of atoms of each element in the products equals the number of atoms of each element in the reactants? a.not spontaneous b.balanced c.an acid-base reaction d.spontaneous
Answer: balanced
Explanation: i just took the test! :) hope this helps
In an equation, the number of atoms in products is equal to the number of atoms in reactant represents a balanced equation. Hence, option B is correct.
What are chemical reactions?It is a process in which one or more substance is converted into the other substances, is called chemical reactions. The chemical equation is given as A + B = C + D. A, B are reactants and C, D are products.
There are several types of chemical reactions like balanced reactions, spontaneous reactions, combination reactions and decomposition reactions.
Spontaneous reaction is a chemical reaction, in which the reactant is converted into product without the supply of external energy. The spontaneous reaction exothermic. The example for spontaneous reaction is combustion reaction.
Non-spontaneous reactions is a type of chemical reaction, in which the reactants can not be converted into product by its own. This reaction requires a external energy to undergo the chemical reaction. Electrolysis of water is an example of non-spontaneous reactions.
When there is exchange of one or more hydrogen ions (H⁺) between the reactant and product molecules is called acid-base reactions. This thpe of reaction is called as neutralisation reactions.
Balanced reactions is defined as the number of atoms in reactant is equal to the number of atoms in products. It is also said to be that when there is no inequalities between reactant and product.
Hence, if number of atoms in both reactant and product is equal, then it is called Balanced reactions. Thus, the correct option is B.
Learn more about Balanced reaction:
https://brainly.com/question/14263388
#SPJ2
2. Before 0.5-kg ball is dropped from a third story window 20 m above the sidewalk. What is the potential
energy of the ball?
a. 4 J
b. 9800 J
C. 98 J
d. 150 J
Answer:
C
Explanation:
C
20*9.8*0.5
98
Order these sounds from loudest (1) to softest (4). airplane: whisper: crowd at sporting event: rainfall:
Answer:
The arrangement of the following from loudest to softest include:
crowd at sporting event
airplane
rainfall
whisper
Explanation:
When it comes to the arrangements, the pitch of the noise which emerge is what was considered. For example, crowd at sporting event has the highest pitch especially during football matches followed by the airplane sounds during its take-off and landing in the airports. As for whisper, it happens to be the one with softest sound.
Answer:
Airplane. 1
Whisper. 4
Crowd at sporting event. 2
Rainfall. 3
Explanation:
hope this helps
A 0.7 tennis ball is thrown with a velocity of 20 m second to the right what is the momentum of the tennis ball
Explanation:
Momentum of an object is defined as the product of the mass of object and the velocity with which it is moving.
p = mv
where, p = momentum, m= mass and v= velocity
mass m = 0.7 Kg and v = 20 m/s
p = 0.7×20 = 14 Kg-m/sec
Therefore, momentum of the object = 14 kg-m
Which statement is correct about waves?
A. All waves move at the same speed in any
medium.
B. Waves carry the energy but do not carry the matter.
C. Waves must always move from one place to another.
D. Sound waves have more energy than light waves.
Answer:
b is the correct answer
Explanation:
how to calculate force of gravity of an object when force of gravity of other gravity is given
Answer:
I know that F=Gm1m2/r^2 or F=GMn/r^2 and G is like the universal gravitational constant so I hope this helps
A chart showing the type of reproduction that occurs in several organisms is shown below. Organism Type of Reproduction Bacteria Asexual Salmon Sexual Oak Trees Both Bears Sexual Asexual Flatworms Based on the information on the chart, which organisms are able to produce genetically diverse offspring? A Bacteria, oak trees, and flatworms B Salmon, oak trees, and bears C Salmon and bears only D Bacteria and flatworms only
Answer:
C
Explanation:
Answer:
B
Explanation:
Because it’s asking about sexual
The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more __________ than the car.
Answer:Earth has more mass than the car.
in the question
Horticulture 120 pts (HURRY)
Auto-steer technology is dependent on the use of
tracking relayed from satellites to receivers and transmitters in the farm equipment.
Answer: GPS
Explanation:
I took the test 2021
Answer:
okkkkkkkkkkkkkkkkkkkk
Haile's plane travels forward for a few feet and then begins to fall. What would explain the plane's ability to travel forward for a few feet without falling?
Answer:
Aircraft never crash because of one single issue. It's almost always a combination of factors that lead to an accident. Whilst flying is extremely safe, typical reasons why planes crash include pilot error, technical failures, bad weather, terrorism, and pilot fatigue.
Answer The force of the air pushing up on the plane is
equal to the force of gravity pulling down on the
plane.
A string is being driven by a motor with a frequency of 10 Hz. If the speed of the waves travelling down the string is equal to 24 m/s, what is the wavelength?
Answer:
λ = 2.4 m
Explanation:
The speed of a wave is defined as the product of the frequency and the wavelength of that wave:
[tex]v = f\lambda[/tex]
where,
v = speed of wave = 24 m/s
f = frequency of wave = 10 Hz
λ = wavelength of the wave = ?
Therefore,
[tex]24\ m/s = (10\ Hz)\lambda\\\\\lambda = \frac{24\ m/s}{10\ Hz}[/tex]
λ = 2.4 m
Doing science by inquiry always involves:
what is a car doing as it rounds a curve
Answer:
its direction is changing
A gas mixture has 10% O2, 50% Ar (40 gmw) and 40% Pu (244 gmw). What is the density of this mixture?
Answer: 5.39g/L
Explanation:
We need to calculate the average molar mass of the mixture which will be:
= (10 × 32) + (50 × 40) + (40 × 244) / 100
= (320 + 2000 + 9760) / 100
= 12080 / 100
= 120.8g/mol
Since the volume occupied is 22.4L and 1 mole of the gas will occupies 22.4L given the standard temperature conditions, then the density of the mixture will be:
= Mass / volume
= 120.8 / 22.4
= 5.39g/L
Therefore, the density of the mixture will be 5.39g/L.
When plane waves cross a boundary at a non-zero angle to the boundary, each wavefront experiences a change in ........... and ............ .
Answer:
When plane waves cross a boundary at a non-zero angle to the boundary, each wavefront experiences a change in direction and wavelength
Explanation:
Waves that cross the boundary from one medium to another, that have different densities at an angle to the boundary between the two medium is refracted (bent) in the second medium and experiences a change in direction and speed due to a change in the wavelength of the wave
List out of how animals and plants can cause weathering.
Plants
Aluminium + hydrochloric acid =
Answer:
Aluminum hydrochloric acid
Explanation:
Aluminum reacts with diluted hydrochloric acid at room temperature. The metal aluminium dissolves in hydrochloric acid, producing aluminum chloride and colorless hydrogen gas. The reaction taking place between aluminium and hydrochloric acid is irreversible. And the final products will not react with each other.
A schoolbus accelerates to 65 mph and enters the freeway. It travels for 2.3 hours at that speed while on the freeway. What's the distance travelled on the freeway?
Answer:
The distance travelled on the freeway is 149.5 miles.
Explanation:
The school bus travels on the freeway at constant speed. According to the statement, we need to calculate the distance travelled by the vehicle by means of the following formula:
[tex]x = v\cdot t[/tex] (1)
Where:
[tex]x[/tex] - Traveled distance, in miles.
[tex]v[/tex] - Speed, in miles per hour.
[tex]t[/tex] - Time, in hours.
If we know that [tex]v = 65\,\frac{mi}{h}[/tex] and [tex]t = 2.3\,h[/tex], then the distance travelled by the school bus is:
[tex]x = v\cdot t[/tex]
[tex]x = \left(65\,\frac{mi}{h} \right)\cdot (2.3\,h)[/tex]
[tex]x = 149.5\,mi[/tex]
The distance travelled on the freeway is 149.5 miles.
mercury is the closest planet to the sun, but its mean temperature is only 67°C. why is this?
Explanation:
Mercury is the closest planet to the sum, but its mean temperature is only 67°C. This is because Mercury has almost no atmosphere to hold in heat and keep the surface warm.
Hope it will help :)❤
Give reasons why christian should avoid corruption
Answer: that Christians should not withdraw from the world, but should actively participate in the ... That is perhaps the reason why there is currently such an ... Investigating the root causes and consequences of corruption may contribute to a more.
Explanation:
Describe the net transfer of thermal energy and any changes in temperature When a metal block at 300Ak is placed in water at 15°C
Answer:
Q_c = Q_abs
Explanation:
You are asked to describe the process when placing a hot block in cold water.
The first thing to do is put all the quantities in the same units
block temperature T_bloque = T_h = 300 K = 300 -273 = 27ºC
water temperature T_water = T_c = 15ºC
* initially the block cools down decreasing its temperature
* the water temperature increases
* the equilibrium is established when the thermal energy of the two bodies is equal, therefore they have the same temperatures T_f
* Conservation of energy requires that the energy released by the hot block is equal to the energy absorbed by the cold body (water)
transferred thermal energy Q_c = m_block ce_block (T_h-T_f)
absorbed thermal energy Q_abs = m_agua ce_agua (T_f - T_c)
* if we subtract the energy transferred and the absorbed gives zero, therefore the net energy transferred is zero
Q_c = Q_abs
Erosion and Weathering can cause changes in earths surface but how does erosion alone changes the earth surface.
Answer:
The action of erosion alone can change the earth's surface. Erosion can wash away nutrients on the earth's surface, change the appearance of the soil of a particular area over time, can bore holes, that form caves, change landscapes for example when the earth is hit with gully erosion by continuous water runoff over time. Erosion can move soil to a new area.
Explanation:
Weathering involves breaking down rock into smaller pieces without any form of formal movement of those broken rock pieces. These processes that can lead to weathering are caused by mechanical, chemical, and organic processes which can happen over time. Erosion can now move broken rock pieces or soil to another place by water or wind. Weathering and erosion constantly change the Earth's surface.
What effect would constriction of the blood vessels have on the body?
Answer:
When blood vessels constrict, the flow of blood is restricted or decreased, thus retaining body heat or increasing vascular resistance. this makes the skin turn paler because the blood reaches the surface, reducing the radiation of heat. hope this helps
The periodic wave in the diagram below has a frequency of 80. hertz.
What is the speed of the wave? (1) 13 m/s (2) 60. m/s (3) 27 m/s (4) 120 m/s
Answer:
hi how are you
2) 5/8
4) 5/8
can someone please solve this
The angular velocity is the ration of the change in the angle turned to time.
Why does the angular velocity increase?The angular velocity is the ration of the change in the angle turned to time. As such, the angular velocity is measured in radians per second. We have been told that the athlete is supposed to perform the jump between figures 1 and 2 in multiple somersaults.
Each time the athlete somersaults, the angular velocity changes. As such, the rate of change of the angular velocity between figures 1 and 2 would be quite high.
On the other hand, the athlete jumps straight vertically down between figures 2 and 3 and does not turn. Hence, the angular velocity decreases.
Learn more about angular velocity:https://brainly.com/question/13649539
#SPJ1