Answer:
34.45m
Explanation:
Magnitude of a vector is equal to the square root of sum of squares of x & y vectors.
Magnitude = [tex]\sqrt({x^2} + {y^2})[/tex]
= [tex]\sqrt({19.5^2} + {28.4^2})[/tex]
=34.45m
Can anybody answer number 3 please hurry
Answer:
I think it's second choice
A ticker timer 50dots per second. When a body is pulled by a tap through the timer, the distance between the third and fourth dot is 3cm and the distance between fourth and fifth dot is 4cm.What is the acceleration of the body?
Answer:
Explanation:
Time for one dot = 1 /50 = .02 s
Distance between 3 rd and fourth dot is 3 cm and time taken to travel this distance is .02 s
velocity = 3 cm / .02 = 150 cm /s
Distance between 4 th and 5 th dot is 4 cm and time taken to travel this distance is .02 s
velocity = 4 cm / .02 = 200 cm /s
change in velocity = 200 cm/s - 150cm/s = 50 cm /s
Time taken = .02 s
Acceleration = 50 / .02 cm/s²
= 2500 cm/s²
A foot is 1/3 of a yard. What part of a meter is a millimeter?
1/2
1/5
1/100
1/1000
Answer:
Explanation:
1/1000
If a foot is 1/3 of a yard the 1/1000 part of a meter is a millimeter, therefore the correct answer is option D.
What is a unit of measurement?A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
Any additional quantity of that type can be stated as a multiple of the measurement unit.
As given in the problem a foot is 1/3 of a yard then we have to find out what part of a meter is a millimeter,
1 meter = 100 centimeters
1 centimeters = 10 millimeters
1 meter = 100×10 millimeters
1 meter = 1000 millimeters
1 millimeters = 1/1000 meter
Thus, the 1/1000 part of a meter is a millimeter, therefore the correct answer is option D.
Learn more about the unit of measurement from here;
brainly.com/question/12629581
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Cho q1= 8.10 mũ -8C ; q2 = -8.10 mũ -8C . Đặt tại 2 điểm A và B cách nhau 6cm trong không khí . Xác định lực điện dung dịch lên qo = 8.10 mũ -8C đặt tại : a. CA= 4cm , CB= 10cm b. CA=CB= 5cm c. CA= 6cm , CB= 6cm
Answer:
♂️
Explanation:
♂️♂️♂️
Blank is the time rate of change in velocity
Acceleration is the time rate of change in velocity.
Acceleration = Rate of change of velocity
Determine la inercia rotacional de una varilla de 4 m de largo y 2 Kg de mesa si su eje de rotación esta situado a la mitad de la varilla.
Answer:
I = 2.667 kg m²
Explanation:
The moment of inertia of a body can be calculated by the expression
I = ∫ L² dm
For high symmetry bodies the expressions of the moment of inertia are tabulated, for a rod with its axis of rotation at its midpoint it is
I = [tex]\frac{1}{12}[/tex] m L²
let's calculate
I = [tex]\frac{1}{12}[/tex] 2 4²
I = 2.667 kg m²
Which of the following produces massive amounts of energy from atoms?
Fission.
Fusion.
Neither.
Both
Answer:
d, both
Explanation:
fission is the process of electrons from atoms coliding into other atoms which releases more electrons and when done right releases lots of energy.
fusion is the process of using intense heat and electromagnetic forces to force electrons to bind to atoms which releases lots of energy
7.
The speed of an electromagnetic wave is a constant, 3.0 x 108 m/s. The wavelength of a wave is 0.6 meters.
What is the frequency?
1.8 Hz
5.0 Hz
5.0 x 108 Hz
O 1.8 x 108 Hz
Expand(Find the cube of):(x+y)³
( x + y )³
x³ + y³ + 3x²y + 3xy²
(or)
x³ + y³ + 3xy (x+y)
HURRY IM TIMED ON THIS!!
What would make oppositely charged objects attract each other more?
A. increasing the positive charge of the positively charged object and increasing the negative charge of the
negatively charged object
B. decreasing the positive charge of the positively charged object and decreasing the negative charge of the
negatively charged object
C. increasing the distance between the positively charged object and the negatively charged object
D. maintaining the distance between the positively charged object and the negatively charged object
Answer:
The correct answer is A. increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Processing Questions:
Directions: Answer the questions below on a clean sheet of paper.
1. How was the result of your physical fitness test in Flexibility and muscular
strength compared to your previous assessments?
2. Did you notice some improvements? If no, what do you need to do to improve
it?
Answer:
How was the result of your physical fitness test in Flexibility and muscular
strength compared to your previous assessments?
Explanation:
Please help I’ll give brainliest
Answer:
Magnetic Field
Explanation:
Saturn's rings come from its ______
Answer:
Saturn's rings are thought to be pieces of comets, asteroids or shattered moons that broke up before they reached the planet, they are made of billions of small chunks of ice and rock coated with another material such as dust.
Explanation:
They are brought in by Saturn's powerful gravity :)
Your bike starts with an initial velocity of 1 m/s and you accelerate to 4 m/s in 6 seconds. How far did you travel while accelerating?
Answer:
78 m
Explanation:
Initial v = 1 m/s
a = 4 m/s²
t = 6s
[tex]x = v_{i} t + \frac{1}{2}at^{2} \\x = (1)(6) + \frac{1}{2} (4)(6)^{2} \\x = 6 + 72\\x = 78[/tex]
4. A current of 3.00 A flows through a resistor when it is connected to a
12.0 - V battery. What is the resistance of the resistor?*
2.4 ohms
36 ohms
4 ohms
0.3 ohms
Answer:
V=IR
12 = 3 ×RESISTANCE
RESISTANCE=12/3
=4 Ohms
answer is the third option
Assuming constant volume, the pressure of a sealed system is 25.0 kPa at 25.0°C. If the temperature of the system increases by 15.0 °C, what is the new pressure of the sealed system?
Answer:
use the gas law equations
S_I_L_
_O_T_A_L
P_W_R
J_M_
S_E_D_
_A_S_N_
K_C_
Answer:
Football
Power
Jamm
Steady
Kick
Please help ASAP -multiple choice- will give brainliest
Answer:
C. An article written by a scientist
Explanation:
Research-based original articles written by a scientist can act as a primary source of information. Textbooks, dictionaries and encyclopedias are generally classified as secondary sources and are rarely primary sources.
describe what happens in terms of energy when you blow up a ballon and release it without trying its neck
Answer:
The answer is below
Explanation:
When a gallon is blown the air energy is saved as potential energy which is compressed inside the balloon. However, when the balloon is released without trying its neck, the air energy quickly turned to kinetic energy, in which the air energy keeps moving as the balloon float around the space.
Hence, in short, what happens in terms of energy when you blow up a balloon and release it without trying its neck is that the air energy moves from potential energy to kinetic energy.
Before the car launches, which objects have stored energy?
Answer:
maybeeeeeeeee launcherrr im not sureee hehe
Which of these is true of all simple machines?
A.Input force is always less than output force.
B.Work input is always greater than work output.
C.Work output is always greater than work input.
D.Output force is always less than input force.
how much time does a stone take to reach on the surface of the earth drop from the height 20m and what will be it's acceleration due to gravity after 3 seconds
The image shown is an illustration of Kepler’s second law. An illustration with a circle representing the sun and a smaller circle representing a planet. The sun is at a focus of a draw ellipse that the planet is on. There are lines drawn radially out from the Sun to the elliptical path of the planet. The planet is at the part of the ellipse that is closest to the sun. The position of the planet is labeled W and the position opposite the planet is labeled Z. The line closest to W is labeled X and the line closest to Z is labeld Y. Which conclusion is best supported by the image? The gravitational force at W is less than the gravitational force at Y. The time needed to travel from W to X is the same as the time needed to travel from Y to Z. The gravitational force at W is the same as the gravitational force at Y. The time needed to travel from W to X is greater than the time needed to travel from Y to Z.
Answer:
B; the time needed to travel from W to X is the same as the time needed to travel from Y to Z.
Explanation:
According to Kepler's Second Law, the time it takes to travel each sweep of area is equal, the same way the area of each section is also equal. Also, this answer is correct on Edge.
Answer:
The answer is B !
Explanation:
I took the test and got it correct
Why does earth not float away from the sun?
Answer:
Because the sun's gravity holds it in its orbit
what are thedisadvantages of using alcohol instead of mercury in a thermometer?
Answer:
Disadvantages. It is less durable because alcohol evaporates faster than mercury. It cannot measure high temperature because of a low boiling point. It wets the walls of the thermometer, which can adversely impact the accuracy of readings.
What will be the ME of a machine that produces a 240 N work with a 300
N work input?
Given:
Solution:
Answer:
Answer:
Efficiency = 80%
Explanation:
Given the following data;
Work output = 240 N
Work Input = 300 N
To find the mechanical efficiency of a machine;
[tex] Efficiency = \frac {Out-put \; work}{In-put \; work} * 100 [/tex]
Substituting into the equation, we have;
[tex] Efficiency = \frac {240}{300} * 100 [/tex]
[tex] Efficiency = 0.8 * 100 [/tex]
Efficiency = 80%
Therefore, the mechanical efficiency of the machine is 80 percent.
Anwser this Question , i will Brainelist .
Answer:
D option
Explanation:
. It requires 250 N to lift up a bag full of hockey equipment. How much work is done while carrying it 12 m down the stairs into the basement?
( only need answer no work is needed )
Answer:
Explanation:
Work = force times displacement, therefore,
W = 250(12) so
W = 3.0 × 10³ N*m
Electromagnetic waves travel at a speed of 3.0 x 108 m/s. A radio station transmits waves
with a wavelength of 2.5 x 102 m.
Calculate the frequency of the radio waves.
Answer:
1.2×10⁶ Hz
Explanation:
Applying,
v = λf............. Equation 1
Where v = speed of wave, λ = wavelength, f = frequency.
make f the subject of the equation
f = v/λ............... Equation 2
From the question,
Given: v = 3.0×10⁸ m/s, λ = 2.5×10² m
Substitute these values into equation 2
f = 3.0×10⁸/2.5×10²
f = 1.2×10⁶ Hz
What is capacitive reactance and how to find it??
Answer:
Capacitivie reactance is the angular frequency
Explanation:
hope this helps
have a great day/night