Answer:
1. Speed
Explanation:
"how far an object moves in a certain amount of time"
"how far an object moves"- distance
"In a " - over
"certain amount of time" - time
Distance over time is speed.
The speed of an object is the distance the object travels in one unit of time.
Hope I Helped, Feel free to ask any questions to clarify :)
Have great day!
-Aadi x
pls help with my with my homework, i started it but i’m stuck on the rest. if my answers that i already put are wrong pls let me know
You are 100% right for question a and you have a good start on b!
Explanation:
For (ii) of part a, you could also say that since the friction force is in the opposite direction of the pushing force, that the friction is '-60N' The negative sign just shows the direction of friction relative to the pushing force. But for the magnitude the signs are not important.
For part b,
work done equals force × distance
w = F×d
In this case, the worker is pushing with 60 newtons, and the distance is 28m.
Therefore,
w = 60N×28m
w = 1680j
(Or 1.7kj)
Great job! You got most of it!
Convert 86400 seconds into days.
Answer:
1 day
Explanation:
86400s = 1440min
1440min = 24h
24h = 1 day
Answer:
1 Day
86400 seconds is equal to a day
help please
which of the following reacts with most metals to form Hydrogen gas
A.acids
B.Bases
C.acids&bases
Answer:
acid and bases
Explanation:
Need help pls. It is for acellus
Answer:
The height of the water column = 1.62405[tex]\overline{30}[/tex] × 10⁻¹ m
Explanation:
The air cavity in the Coke bottle = 0.220 m deep
The fundamental (frequency) it plays when water is added to shorten the column and it is blown across the top, f = 528 Hz
The given speed of sound in air, v = 343 m/s
We note that the air cavity in the coke bottle is equivalent to a tube closed at one end
The fundamental frequency for a tube closed at one end, 'f', is given as follows;
f = v/(4·L) = v/λ
Where;
L = The height of the water column
λ = The wavelength of the wave
∴ 4·L = v/f = (343 m/s)/(528 Hz) = 0.6496[tex]\overline{21}[/tex] m
∴ L = 0.6496[tex]\overline{21}[/tex] m/4 = 0.162405[tex]\overline{30}[/tex] m
The height of the water column = 1.62405[tex]\overline{30}[/tex] × 10⁻¹ m.
Answer:
0.058
Explanation:
got it right on acellus
___ is the total movement capacity of a joint. Object grip Object grip Range of motion Range of motion Joint flexion Joint flexion Joint extension
Answer: Range of motion
Explanation:
Range of motion can be defined as the extent to which joint can move and cause the movement of the arms and legs. It measures the degree to which the limb can make up a circle. A joint is formed by the connective of two or more bones. The range of motion can be active, passive, assess, preserve and others. Some joints do not allow motion of the limbs example fibrous joints between sutures of skull. Shoulder joints are most flexible joints.
Two spheres of radii 5cm and 10cm are given charges 100c and 50c respectively and then connected by a wire. calculate the loss of energy after connection.
Answer
15
Explanation:
The loss in potential energy of the two spheres after the connection is determined as -5.4 x 10¹³ J.
Energy of the spheres before the connectionThe potential energy of the spheres before the connections is calculated as follows;
V1 = (kq)/r
V1 = (9 x 10⁹ x 100)/(0.05)
V1 = 1.8 x 10¹³ J
V₂ = (9 x 10⁹ x 50)/(0.01)
V₂ = 4.5 x 10¹³ J
Total energy = (4.5 + 1.8) x 10 10¹³ J = 6.3 x 10¹³ J
Total charge of spheres after connection = q₁ + q₂ = 100 c + 50 c = 150 cRadius of the spheres after connection = 15 cmV = (9 x 10⁹ x 150)/(0.15)
V = 9 x 10¹²J
Loss in energyΔV = 9 x 10¹²J - 6.3 x 10¹³ J
ΔV = -5.4 x 10¹³ J
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What’s the answer??????????????????
7. What is the climate like on Mars?
Answer:
Temperatures on Mars average about -81 degrees F. However, temperatures range from around -220 degrees F. in the wintertime at the poles, to +70 degrees F.
Explanation:
A stationary hockey puck has a mass of 0.27 kg. A hockey player uses her stick to apply a 18 N force over a distance of 0.42 m. How much work does this force do on the puck?
Group of answer choices
7.6 J
-43 J
-7.6 J
28 J
43 J
Scientists use radioactive decay to measure
Answer:
"Scientist use radioactive decay to measure the age of a rock or fossil."
Explanation:
"To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events."
A plastic rod is rubbed with a cloth and becomes positively charged. After charging, the rod is held close to the suspended table-tennis ball shown in Fig. 9.1. The table-tennis ball is covered with metal paint and is uncharged.
Describe what happens to the charges on the metal-painted table-tennis ball as the positively-charged rod is brought close to the ball.
a ball is thrown horizontally from the top of s vertical tower and strikes the ground at point 50m from the bottom of the tower. Given that the height of the tower is 45m, determine the
a)time taken for the ball to hit the ground
b)the initial horizontal velocity of the ball
c)The vertical height of the ball just before striking the ground(take acceleration due to gravity as 10m/s)
Answer:
B
Explanation:
A 30 kg box is pushed along a horizontal surface. The person pushing the box pushes with a constant force of 300 N directed at an angle of 30° below the horizontal. If the box starts from rest and reaches a speed of 5 m/s after only 2 seconds of pushing, find the force of friction acting on the box.
Answer:
500
Explanation:
30*300*5=500 so leuz multiple it by 2 the answer I'd
6CO2 + 6H20 → C6H12O6 + 602
What type of model is shown?
a
b
computer model
conceptual model
physical model
C
mathematical model
Answer:
C. physical model
Explanation:
Sana nakatulong
Mark Brainiest if right plzz. Noah wants observe what happens when zinc is placed in a solution of
copper sulfate, as shown in the photo. But when he tries it, nothing happens.
He knows that the reaction might be happening too slowly to see results in a
few minutes. Which action should Noah take to speed up the reaction?
A. Replace the piece of zinc with a larger piece.
B. Decrease the concentration of the copper sulfate solution
C. Decrease the temperature of the solution.
D. Increase the concentration of the copper sulfate solution.
Answer:
A. the place that piece of with a larger piece
Explanation:
Sana nakatulong
Answer:
D. Increase the concentration of the copper sulphate.
A disc of moment of inertia 45kgm^2 is rotating with an angular velocity of 12rad/s.what will be its rotational kinetic energy?
Answer:
3240 J
Explanation:
here moment of inertia (I)= 45kgm²
angular velocity (ω) = 12 rad/s
now KE = 1/2(Iω²)=1/2(45×12²)= 3240J
How much acceleration does a car need if it is to go a distance of 620 ft. In a time of 20 sec while it is speeding up
When sediment created by weathering and moved by erosion settles in a different location due to gravity
A. Deposition
B. Weathering
C. Erosion
D.Abiotic
Answer:
Deposition
Explanation:
The deposition phenomenon happens when sediment created by weathering and moved by erosion settles in a different location due to gravity
What is Erosion and Deposition?Deposition occurs when sediment, a combination of soil and rock produced by weathering, is eroded and transported to a new area.
Deposition is the act of depositing silt that has been transported by the wind, water, sea, or ice.
Earthen materials are worn away during erosion, a geological process in which they are moved by wind or water.
The removal of soil, rock, or dissolved material from one area on the Earth's crust and subsequent transport to another region for deposition are known as erosional processes. Erosion differs from weathering, which is a static process.
Given data ,
Let the sediment be deposited in an another location due to gravity
Now , As sediment, a mixture of soil and rock created by weathering, is eroded and moved to a new region, deposition takes place.
During three interrelated processes, lithification converts loose sediment grains that are produced by weathering and transported by erosion into clastic sedimentary rock. Deposition occurs when gravity and friction work against the forces that move sediment, enabling it to build up.
Hence , when sediment created by weathering and moved by erosion settles in a different location due to gravity , deposition takes place
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What are the properties (SALT) of images in
a. A plane mirror?
b. A concave mirror at the different object locations?
c. A convex mirror?
d. A converging lens at the different object locations?
e. A diverging lens?
someone pls answer! i will give u brainliest
Answer:
Liquid
Explanation:
Before anything evaporates, it is in a liquid state.
A force of 20 N acts upon a 5000g block. Calculate the acceleration of the object
Answer:
a = 4 m/s²
Explanation:
Given: 5000 g, 20N
To find: Acceleration (a)
Solution: Firstly, convert 5000g to kilograms
1000g = 1kg
∴ 5000g = 5kg if divided by 1000
A = F ÷ m
= 20 ÷ 5
= 4 m/s²
Newtons are derived units, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.
A baseball travels at a velocity of 45.3 m/s towards second base for 17 s. Calculate the displacement of the ball.
Answer:
770.1 m
Explanation:
From the question given above, the following data were obtained:
Velocity (v) = 45.3 m/s
Time (t) = 17 s
Displacement (d) =?
Velocity is defined according to the following formula:
Velocity = Displacement /Time
With the above formula, we can obtain the displacement of the ball as follow:
Velocity = Displacement /Time
45.3 = Displacement / 17
Cross multiply
Displacement = 45.3 × 17
Displacement = 770.1 m
Therefore the displacement of the ball is 770.1 m
Answer: 770.1 gravity multiplied by time
A graph with resistance in ohms on the x-axis from 0 to 200 and current in amps on the y-axis from 0 to 5. The graph is labeled as current as a function of resistance at 50 V. Points are plotted at (10, 5), (20, 2.5), (100, .5) and (200, .25). There is an inverse curve through the points. Use the graph to answer the questions. Based on the graph, what happens to current as resistance increases? This type of graph shows which type of relationship between the two variables? What would be a reasonable estimate for current at a resistance of 50 Ω?
Answer:
1. decreases
2. inverse proportionality
3. 1 A
Explanation
Just did it
Answer:
1. decreases
2. inverse proportionality
3. 1 A
Explanation
Just did it
Which parental qualities promote healthy child development?
Answer:
Which parental qualities promote healthy child development? Check all that apply.
patient
dependable
lenient
disciplined
wealthy
Explanation:
A, B, D
the sun is one hundred and fifty million kilometers away from the earth write this as an ordinary whole number
Answer:
150000000
Explanation:
There you go :)
Answer:
150,000,000
Explanation:
150+6zeros=15000000
David uses a spanner to turn a bolt.
He pushes the spanner with a force of 50N at a distance of 0.3m from the pivot as shown in the diagram. Calculate the moment which results from this push on the spanner.
Answer:
7
Explanation:
Does sound travel faster in a warm room or a cold room? Explain your answer.
Answer:
The speed of sound is greater in hot air than it is in cold air. This is because the molecules of air are moving faster and the vibrations of the sound wave can therefore be transmitted faster. This means that when sound travels from hot air to cold air or from cold air to hot air it will refract.
Explanation:
Hope this will be help!
HELP PLEASE BRAINLIEST INCLUDED
Please select the word from the list that best fits the definition
How much energy it takes to perform a specific amount of work
Answer: c. Efficiency
Explanation:
A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.065 m, released from rest, and subsequently oscillate back and forth with an angular frequency of 14.7 rad/s. What is the speed of the object at the instant when the spring is stretched by 0.032 m relative to its unstrained length
Answer:
0.832 m/s
Explanation:
The work done by the spring W equals the kinetic energy of the object K
The work done by the spring W = 1/2k(x₀² - x₁²) where k = spring constant, x₀ = initial compression = 0.065 m and x₁ = final compression = 0.032 m
The kinetic energy of the object, K = 1/2mv² where m = mass of object and v = speed of object
Since W = K,
1/2k(x₀² - x₁²) = 1/2mv²
k(x₀² - x₁²) = mv²
mv² = k(x₀² - x₁²)
v² = [(k/m)(x₀² - x₁²)]
taking square root of both sides, we have
v = √[(k/m)(x₀² - x₁²)] since ω = angular frequency = √(k/m),
v = √[(k/m)√(x₀² - x₁²)]
v = ω√(x₀² - x₁²)]
Since ω = 14.7 rad/s, we substitute the other variables into the equation, so we have
v = 14.7 rad/s × √((0.065 m)² - (0.032 m)²)]
v = 14.7 rad/s × √(0.004225 m² - 0.001024 m²)]
v = 14.7 rad/s × √(0.003201 m²)
v = 14.7 rad/s × 0.056577
v = 0.832 m/s
What is the characteristic of the columns in the periodic table?
Answer: The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital.
Explanation: :)