Answer:
The speed at which she threw the marshmallow is approximately 4.76 m/s
Explanation:
The given in formation are;
The range in which the marshmallow was thrown = 2 m (The location of her friend)
The angle at which the marshmallow was thrown = 30 degrees
The horizontal range is given by the following formula;
[tex]R = \dfrac{u^2 \times sin(2\cdot \theta)}{g}[/tex]
Where;
R = The range = 3 m
u = The initial velocity
θ = The angle at which the marshmallow was thrown = 30°
g = The acceleration due to gravity = 9.81 m/s²
By substitution, we have;
[tex]2 = \dfrac{u^2 \times sin(2\times 30)}{9.81} = \dfrac{u^2 \times sin(60)}{9.81}[/tex]
[tex]\therefore u^2 = \dfrac{ 2 \times 9.81}{sin(60)} = \dfrac{u^2 \times sin(60)}{9.81} \approx 22.66[/tex]
u ≈ √(22.66) ≈ 4.76 m/s
u ≈ 4.76 m/s
The speed at which she threw the marshmallow ≈ 4.76 m/s.
Answer:
4.76 m/s
Explanation:
Which of the following objects has the most gravity? A. a semi-truck B. A grain of sand C. Jupiter D. All of these have equal gravity
Answer:
C. Jupiter
Explanation:
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
plz mark brainloest
3. What is the acceleration of a 10 kg mass pushed by a 5 N force?
Answer:
F=ma
Plug it in:
5=10a
5/10=(10a)/10
.5m/s²=a
Explanation:
Brainliest?
Answer:
[tex]\frac{1}{2} \frac{m}{s^2}[/tex]
Explanation:
Recall the equation F = ma. We want to find a, and we already know F and m, so we can plug those in. [tex]5N = 10kg \cdot a -> a = 5N/10kg = \frac{1}{2} \frac{m}{s^2}[/tex]
A bicycle has a mass of 10kg and an acceleration of 2m/s². What is the net force of the bicycle?
20 m/s
20 m/s
5 N
5 N
0.2 m/s
0.2 m/s
20 N
Answer:
The answer is 20 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
Force = mass × accelerationFrom the question
mass = 10 kg
acceleration = 2 m/s²
We have
Force = 10 × 2
We have the final answer as
20 NHope this helps you
The real advantage to hydrostatic weighing is that it __________.
A.
can be done anywhere with no equipment
B.
gives one of the most accurate measurements of body fat
C.
uses calipers to measure body fat
Answer:
B. gives one of the most accurate measurements of body fat
Answer:
B. ) gives one of the most accurate measurements of body fat
I need help with all these. Number them pleaseee
the smooth and accurate execution of movement as conceived in the mind and executed by the body parts
The smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes ; The central nervous system.
Although your question is incomplete an answer is provided which falls within the scope of your question
The human brain receives, interprets and transfer signals it deduces from the impulses it received to the various sense organs ( body parts ) for execution. and this process involves coordination within the nervous system.
The central nervous system is a category of the Nervous system of a human and it consists of the spinal cord and the human brain. and the peripheral nervous system
Hence we can conclude the smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes, The central nervous system.
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What force is needed to accelerate a 75 kg boy 3 m/s squared on a bike?
Answer:
The answer is 225 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question we have
force = 75 × 3
We have the final answer as
225 NHope this helps you
36 In the given circuit, A, B, C and D are four lamps connected with a battery of
60V.
Analyse the circuit to answer the following questions.
(i) What kind of combination are the lamps arranged in (series or parallel)?
(ii) Explain with reference to your above answer, what are the advantages (any
two) of this combination of lamps?
(iii) Explain with proper calculations which lamp glows the brightest?
(iv) Find out the total resistance of the circuit.
A parallel circuit, is one which the conductors leading into the bulbs are joined together on one side of the bulbs, and the conductors coming out of the bulbs are joined together on the other side of the bulb
The correct arrangement, advantages, lamp and resistance values are;
(i) The lamps are arranged in parallel(ii) Improved reliability Optimum performance of the bulbs(iii) Lamp C(iv) The total resistance is 4 ΩThe reason the above values are correct are as follows:
(i) From the diagram attached, the lamps are arrange in parallel
This is so because, each lamp is directly connected across the terminals of the the voltage source
(ii) The advantages of the bulbs arranges in parallel are;
The other lamps will continue working if one lamp becomes faultyThe voltage is applied directly to each lamp, such that the lamps are lit with the maximum power available in the circuit(iii) The brightness of the lamp is given by the power of the lamp
The lamp with the highest wattage, or power glows the most
Power, P = Voltage, V × Current, I
The power for lamp A, [tex]P_A[/tex] = 60 V × 3 A = 180 W
The power for lamp B, [tex]P_B[/tex] = 60 V × 4 A = 240 W
The power for lamp C, [tex]P_C[/tex] = 60 V × 5 A = 300 W (Brightest)
The power for lamp D, [tex]P_D[/tex] = 60 V × 3 A = 180 W
Therefore, lamp C has the highest power and glows the brightest
(iv) The total resistance is given by the voltage, divided by the total current
Total current, I = 3 A + 4 A + 5 A + 3 A = 15 A
[tex]Total \ resistance, \ R_{tot} = \dfrac{V}{I_{tot}}[/tex]
Therefore;
[tex]Total \ resistance, \ R_{tot} = \dfrac{60 \, V}{15 \, A }}=4 \, \Omega[/tex]
The total resistance, R = 4 Ω
Learn more about series and parallel circuits here:
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A boat moving at a constant speed travels 15 meters in 8 seconds. How far does it travel
in 40 seconds?
75 meters
53 meters
335 meters
480 meters
Explain the free motion of particles.
Answer:
D : An electron may act with either particle-like or wave-like characteristics.
Explanation:
This is the whole basis of the Schrödinger equation.
The other options are correct, but they do not state the dual nature of the electron.
What happens to the times difference between primary and secondary waves
Answer: The time differences become bigger.
Explanation: Suppose a primary and secondary wave both travel a distance of 4,000 km before they are picked up by a seismograph.
Select the correct answer. What are the units for the spring constant, k?
A. newton meters
B. newton seconds
C. newtons/meter
D. newtons/second
E. newtons/seconds
Answer:
The spring constant,k is measured in newtons per meter
Answer:
C. NEWTON / METRE is the correct answer .Thank your ☺️☺️
What do you ocean waves and sound waves have in common?
Answer:
They are both mechanical waves
1.A storm is moving toward your house at a speed of 30 km/hr. It is now 60 km away from your house. In what time will the storm reach your house?
A.they are farther apart
B.they have increased in size
C.they have lost energy
D.they are moving slower
Answer:
c
Explanation:
Need help on this question??please
Max and Jimmy continue jumping on a trampoline. When they jump at the same time, Max makes a wave crest and Jimmy makes a wave trough. What type of wave interaction occurred?
Answer:
The type of wave interaction occurred is destructive interference
Explanation:
Given that,
Max and Jimmy jump at same time.
Wave crest makes by Max and wave trough makes by Jimmy.
We need to find the type of wave interaction occurred
According to given data,
We know that,
If the wave crest and wave trough are interacted to each other then the interaction is destructive interference.
If the wave crest and wave trough are interacted with crest and trough then the interaction is constructive interference.
So, we can say that if the wave crest and wave trough are interacted to each other then the interaction is called destructive interference
Hence, The type of wave interaction occurred is destructive interference
Answer:
destructive interference
Explanation:
Please someone answer, I will mark them who answers as brainliest,
How much energy is needed to heat 100 kg of paraffin from 10 degree Celsius to 30 degree Celsius. The specific heat capacity of paraffin is. 2200 unit.
Answer:
40,000J
Explanation:
The heat energy required to raise the temperature of unit mass of substance through unit degree is called specific heat of substance . As given 2000J energy is needed to heat 1 kg of paraffin through 1
o
C, therefore specific heat of paraffin will be 2000J/kg−
o
C.
Now, heat energy required to raise the temperature of mass m of substance (specific heat c) through Δt is given by ,
Q=mcΔt,
Given: m=10kg,Δt=2
o
C,c=2000J/kg−
o
C
Q=10×2000×2=40,000J
what is my real name
Answer:
Probably Trent or something like that
Answer:
Trent or tranthjhikjhjhuiivd
Watching your mother bake bread, you learned that the dough of the bread rises because yeast acts on the sugar and releases gas. You wonder whether the amount of sugar used will affect the size of the bread. That is, if you add more sugar, the size of the bread will be larger. Your mother’s recipe calls for 60 grams of sugar to produce a loaf of bread about 1260 cm3 what is the problem
Answer:
The question is not complete, below is the completed question:
Watching your mother bake bread, you learned that the dough of the bread rises because yeast acts on the sugar and releases gas. You wonder whether the amount of sugar used will affect the size of the bread. That is, if you add more sugar, the size of the bread will be larger. Your mother’s recipe calls for 60 grams of sugar to produce a loaf of bread about 1260 cm3. What is the independent and dependent variables?
Answer:
independent variable: amount of sugar used
Dependent vairable: size of bread
Explanation:
In a scientific experiment, there are two main types of variables; independent and dependent variable:
Independent variable: This is the variable that is completely under the control and manipulation of the experimenter. The values of this variable can be varied at will, and the effect of the variation affects the dependent variable. In this example, the independent variable is the amount of sugar used, because the amount of sugar used is determined by the baker.
Dependent variable: The dependent variable is the variable that changes as a result of the manipulation of the independent variable. It is not directly under the manipulation of the experimenter, and it is the variable that the experiment seeks to study. In this example, the size of the bread is the dependent variable because it depends on the amount of sugar used.
Besides the leaves, what else do the trees release in the autumn?
Answer:
Tress can also release acorns and pinecones and such
Explanation:
A dog is chasing a cat towards a tree. The cat has a 10-meter lead and runs at a speed of 6 meters per second. The dog runs at a speed of 8 meters per second. The tree is 30 meters away from the dog’s starting position. Which animal will reach the tree first
Answer:
mnnnnnbmbmmmmnnmmmmmmnnnnnnmmm.mm nooooo
Explanation:
awer some folom myy thans for dog
Find the horizontal and vertical displacement comments of 145m displacement of a superhero that flies from the top of a building at an angle of 28 degrees below the horizontal
Answer:
The horizontal and vertical displacement is 128.02 m and 68.07 m respectively.
Explanation:
Displacement, d = 145 m
The top of a building at an angle of 28 degrees below the horizontal
We need to find the horizontal and vertical displacement.
For horizontal displacement,
[tex]D_x=d\cos\theta\\\\D_x=145\times \cos(28)\\\\D_x=128.02\ m[/tex]
For vertical displacement,
[tex]D_y=d\sin\theta\\\\D_y=145\times \sin(28)\\\\D_y=68.07\ m[/tex]
So, the horizontal and vertical displacement is 128.02 m and 68.07 m respectively.
If a sled is being pulling on the ground toward the right with a force of 100 N and friction is acting on it to the left with a force of 85 N, what is the net force
of the sled?
O 15 N to the left
15 N to the right
185 N to the right
185 N to the left
Answer:
15 N to the right.
Explanation:
100 N to the right -->
85 N to the left <--
So therefore in order to find the net force of where the sled is being dragged towards is 100 N - 85 N = 15 N.
So the sled is moving towards the right of 15 N.
To determine the amplitude of a wave you need to know the
Calculate the following sum, and express the answer in meters. Follow the rules for significant figures.
(25.873 km) + (1024 m) + (3.0 cm) =
Answer:
26897.3 m
Explanation:
1 km = 1000 m
1 cm = 0.01 m
so the calculation will be
25873 m + 1024 m + 0.03 m= 26897.3 m
The sum of the given expression (25.873 kilometers ) + (1024 meters ) + (3.0 centimeters) would be 26897.0 meters.
What are significant figures?In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.
As given in the problem we have to Calculate the following sum and express the answer in meters, by Following the rules for significant figures,
(25.873 kilometers ) + (1024 meters ) + (3.0 centimeters)
1 kilometers = 1000 meters
1 meter =100 centimeters
(25.873 ×1000×100) + (1024×100 ) + (3.0 centimeters)
= 26897.03 centimeters
Thus ,the sum of the given expression (25.873 kilometers ) + (1024 meters ) + (3.0 centimeters) would be 26897.0 meters.
To learn more about significant figures here, refer to the link;
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What is the acceleration of a 50kg object pushed with a force of 500 newtons?
Answer:
10
Explanation:
Acceleration = Force / Mass
500 N / 50 Kg = 10
Enzo investigated the effect of different types of fertilizers on the growth of bean plants. He hypothesized that fertilizer B would result in the greatest amount of growth. However, the results showed that the control plants without fertilizer had the greatest growth. Why was Enzo's data still valuable even though it did not support his hypothesis?
Answer:
The answer is "In this information, Enzo will be confident that if any fertilizer is required only for plants".
Explanation:
The Beans plants were members of the group of legumes. Legume flowering plant under which the roots form nodules. These nodules require a specific bacterium called bacteria, which fix nitrogen. Its bacterium transforms nitrogen from the atmosphere into the soil's nitrate. Consequently, for some of its growth, beans do not require fertilizer.
A 25 newton force applied on an object moves it 50 meters. The angle between the force and displacement is 40.0 degrees. What is the value of work being done on the object
Three resistors are placed in series. They have the following resistances: R1 = 20 ohms, R2 = 20 ohms, R3 = 10 ohms. What
current would be moved through this circuit by a 5-V power supply?
Answer:
0.10 A
Explanation:
