Answer:
A. 0.5J
Step-by-step explanation:
[tex]K. E._{(cart)} = \frac{1}{2} m {v}^{2} \\ \\K. E._{(cart)} = \frac{1}{2} \times 4 \times (0.5)^{2} \\ \\ K. E._{(cart)} = 2 \times 0.25 \\ \\ K. E._{(cart)} = 0.5 \: J[/tex]
The kinetic energy of a 4 kg cart pushed at a rate of 0.5 m/s is 0.5 J.
Kinetic energy = 1 /2 mv²
where
m = mass
v = velocity
Therefore,
m = 4 kg
v = 0.5
Kinetic energy = 1 / 2 × 4 × 0.5²
kinetic energy = 1 / 2 × 4 × 0.25
kinetic energy = 1 / 2 × 1
kinetic energy = 1 /2 = 0.5 j
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Help pls (8grade math)
Answer:
It's D. (1,-2)
Step-by-step explanation:
Answer:
The answer is B: (-1, 2)
Step-by-step explanation:
Imagine a mirror is placed along the y-axis.
Since a reflection is applied, the mirror coordinates would be the opposite of the original coordinates, just like a mirror is opposite of what you see when you look into it.
Original coordinates: (1, 2)
Mirror coordinates: (-1, 2)
Please help!!!!
Order these numbers from least to greatest.
6.1, 6.22, 6.202, 6.1021
Answer:
well played ahajkdjajkskdjdhdjskkskfjsiiskfks
Am I correct?? Please correct me
A tennis ball is launched from a catapult from the ground with an initial velocity of 26fps. What is the maximum height of the ball? When will it attain this height? Use H=-16T2+26T
Answer:
10.5618feet, 0.8125sec
Step-by-step explanation:
Given the height reached by the catapult expressed by the equation H=-16T^2+26T
At the maximum height, the velocity of the object is zero, hence;
v = dh/dt = 0
-32t + 26 = 0
-32t = -26
t = 26/32
t = 0.8125secs
Hence it will attain the maximum height after 0.8125second
Substitute t = 0.8125s into the expression to get the maximum height
H=-16t^2+26t
H = -16(0.8125)^2 + 26(0.8125)
H = -16(0.6602) + 21.125
H = -10.5632+21.125
H = 10.5618
hence the maximum height reached by the ball is 10.5618feet
ilgram surveyed both a panel of Yale undergraduates and a panel of psychology professors before he conducted his original experiment. In these surveys, he found that __________.most people predicted that less than 1 percent of participants would go to 450 voltsmost people predicted that less than 10 percent of participants would go to 450 voltsmost people predicted that a majority of participants would go to 450 voltsstudents underestimated the percentage who would go all the way to 450 volts, while professors' estimates were fairly accurate
Answer:
The answer is "Choice A"
Step-by-step explanation:
Please find the numbering of the question in the attached file.
Before they performed his initial experiment, Milgram examined both a Yale undergraduate panel as well as a psychology panel. In all of these polls, the majority of the people expected which less than 1 percent will go to 450 volts, that's why Milgram subsequently surveyed the respondents and found 84% happy they had taken part, but only 1% regretted their participation.
Increase 20g by 90%
Answer:
the answer is 38
Step-by-step explanation:
100-90=190
What is the longest iron rod which can be placed flat across the diagonal of a 4m by 2.5m garden shed floor
Answer:
4.7m
Step-by-step explanation:
the length of longest iron rod which can be placed flat across the diagonal of the garden shed can be determined using the Pythagoras theorem,
The Pythagoras theorem : a² + b² = c²
where a = length
b = base
c = diagonal
4² + 2.5² = 22.25²
c =√22,25 = 4.7m
Can some help me with this problem
answer:
140000
step-by-step explanation:
you multiply 1.40*10^5
which equals 140000
good luck :)
i hope this helps
have a nice day !!
Answer:
140000
Step-by-step explanation:
to write this in regular notation, you move the decimal 5 places to the right (or just multiply 1.4 x 10^5)
A store manager receives a delivery of 10 boxes of lightbulbs. Each box contains 20 lightbulbs. The store manager tests all the lightbulbs in one of the boxes and finds that 4 of them are defective.
Which statement about the lightbulbs in the remaining boxes is best supported by this information?
Between 25 and 50 lightbulbs will be defective.
More than 80 lightbulbs will be defective.
Between 60 and 80 lightbulbs will be defective.
No more than 25 lightbulbs will be defective.
Someone pls help im new to this so tysm if you do help:D
Answer:
-6
Step-by-step explanation:
After watching the squirrels at the local park for several days, Sergei asks his science teacher the following question: "Do more squirrels live in maple trees or oak trees in the city park?”
Is Sergei's question a scientific question? Why or why not?
You can download answer here
tinyurl.com/wpazsebu
_____ lateral faces of a rectangular pyramid are congruent.
Adjacent
Opposite
All of the
Answer:
Opposite
------------------------------------
The balance of Micah's checking account is $648. Micah needs at least $800 in the account to cover his expenses. Write and solve an inequality that tells how much money Micah needs to deposit. Explain why there are infinite solutions to the inequality. PlZZ answer asap
Answer:
152
Step-by-step explanation:
800-648=152
C)
(2a²b)² +3(a²b)²-x²(-3ab)²
Answer:
7a^4b^2 -9a^2b^2x^2
Step-by-step explanation:
Given (2a²b)² +3(a²b)²-x²(-3ab)²
Recall that (xy)^a = x^a * y^a
Hence (2a²b)² +3(a²b)²-x²(-3ab)²
expanding the expression
= (2^2 *a^2+2 *b^2) + 3(a^2+2*b^2) - x^2(-3^2 * a^2b^2)
= 4a^4b^2 + 3a^4b^2 - x^2(9a^2b^2)
simplify
= 7a^4b^2 -9a^2b^2x^2
What are the opposites of 9, −2.7, 3.35, and 6
1
5
? Enter the answers in respective order, each separated by a comma.
Answer:
Step-by-step explanation: -9,2,-7,-3,-35, and -6
I need help ring the center, radius, and diameter.
Answer:
(-2, 5), 6, 12
Step-by-step explanation:
Center: (-2, 5)
Radius: 6
Diameter: 12
help with this homework
2g-g+h-1 when g=5 and h=0
Show your work
You and Mr. Fowles have decided to race each other at the Boston Marathon (26 miles long). Mr. Fowles runs at a steady 4.2 miles per hour. He knows your best time is 3 miles per hour so he gives you a 3 mile lead. When will he catch you? How far behind are you when Mr. Fowles finishes the race? How much longer will it take for you to finish?
Answer:
The answer is below
Step-by-step explanation:
Speed is the time rate of change of velocity, it is the ratio of distance to time.
Mr. Fowles runs at a steady 4.2 miles per hour. The time taken to cover 26 miles is:
speed = distance / time
time = distance / speed = 26 / 4.2 = 6.19 hour
I run at 3 miles per hour. I was given 3 mile lead, so the remaining distance is 23 miles (26 - 3). The time needed to complete the 23 miles is:
time = distance / speed = 23 / 3 = 7.67 hour
a) Let d be the distance Mr Fowles catches me. Hence:
time = (d + 3)/4.2; also time = d/3
(d + 3)/4.2 = d/3
3d + 9 = 4.2d
1.2d = 9
d = 7.5 miles
He would catch me at 10.5 (7.5 + 3) miles from the starting point.
b) Mr. fowles finishes after 6.19 hour. At that time, the distance is have covered is:
distance = 6.19 * 3 mi/hr = 18.57 mile
Distance behind = 23 mile - 18.57 = 4.43 mile
c) time longer = 7.67 hour - 6.19 hour = 1.48 hour
What number is obtained by increasing 10 10%
Answer:
11
Step-by-step explanation:
Pretend 10 is 100. 10% of 100 would be 10, therefore 110. Since it's 10 instead of 100, it would be 11.
Step-by-step explanation:
hop it help u ..........
....
Please help me thank you if you do have a good day
Answer:
B. Getting faster
Step-by-step explanation:
solve for x , (2x-1)=5(x+1)
no links
Answer:
x = -2
Step-by-step explanation:
Answer:
x= -2
Step-by-step explanation:
(2x-1)= 5(x+1)
2x - 1 = 5x + 5
-2x -2x
- 1 = 3x + 5
-5 -5
-6 = 3x
-6/3= 3x/3
-2= x
Jaden's batting average is .214. Raul hits 24.3% of his pitches. Abraham hit 2 out of the 9 balls he was pitched. Mark hit 22% of the balls he was pitched. Who has the greatest batting average? Who has the least batting average?
Answer:
Raul has greatest batting average. Jaden has least batting average.Step-by-step explanation:
Convert all the batting averages to a single unit so that comparison is easier.
Use percentages.
Jaden batting average:
= 0.214 = 214/1,000 = 21.4%
Raul = 24.3%
Abraham:
= 2 / 9 * 100%
= 22.2%
Mark = 22%
Raul has the greatest batting average.
Jaden has the least batting average.
Help me with this!!!
Answer:
9
Step-by-step explanation:
7z = z + 54
7z - z = 54
6z = 54
z = 9
True or false; The radian value of 3n/2 corresponds to the positive y-axis?
True
False
Answer:
true
Step-by-step explanation:
On a survey, students reported how many minutes it takes them to travel to school. Here are their responses. 10,13 ,16 5,4 ,14 , Find the mean travel time for these students.
Answer:
Mean travel time = 10.33 minutes
Step-by-step explanation:
The mean of a distribution is a measure of central tendency that shows the centre of a set of data. Mathematically, it is represented as:
Mean = Sum of the terms ÷ Number of terms
Mean = (10 + 13 + 16 + 5 + 4 + 14) ÷ 6
Mean = 62 ÷ 6 = 10.33
∴ Mean travel time = 10.33 minutes
N:B 10.33 minutes = 10 minutes + 0.33 minutes
converting 0.33 minutes to seconds
1 minute = 60 seconds
∴ 0.33 minute = 60 × 0.33 = 19.8 seconds
∴ Mean time = 10 minutes 20 seconds
Lins father is paying for a $20 dollar meal he has a 15% off coupon for the mean. After the discount, a 7% sales tax is applied. What does lins father pay for the meal?
Answer:
$3.21
Step-by-step explanation:
15% off 20 is 17 so 20-17=3
7% of 3 is 0.21 therefore, 3+0.21= $3.21
I need help on solving these problems.
Answer:
the fist one is A and the second one is D
Step-by-step explanation:
Find the first 4 terms and the 10th term of 2n-1
Answer:
1) 1 2) 3 3) 5 4)7
Step-by-step explanation:
In the question it gives you the formula 2n-1
n= number or term for example 1
2x1-1=1
Pls I need help and don’t put that link