Answer:
43 m\s in the 10 seconds?
Explanation:
How far can a dragonfly get if it flies 17 seconds at a speed of 4.2 m/s
Answer:
The answer is 71.4 mExplanation:
The distance covered by an object given it's velocity and time taken can be found by using the formula
distance = velocity × timeFrom the question
velocity = 4.2 m/s
time = 17 s
We have
distance = 4.2 × 17
We have the final answer as
71.4 mHope this helps you
What is the volume of a cube measuring 5.0 m on each side?
a
25 m3
b
125 m3
520 m3
d
5.0 m
Answer:
A.125
Explanation:
Its correct on Schoology.
What is potential energy? Give at least three examples, and explain why they have potential energy.
Answer:
Energy stored in an object due to its position is Potential Energy. · Energy that a moving object has due to its motion is Kinetic Energy.
Explanation:
Answer:
To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position.
Holding a bow and arrow before shooting, The amount of energy stored before you race on track, And a roller coaster going to it's highest point staying there waiting to come down.
Which of the following is the correct SI unit to use to measure a length of rope?
A
Yards
B
Feet
C
Meters
D
Inches
Answer:
D
Explanation:
Answer:
its d inches
Explanation:
what quantity can be obtained from the slope of a position time graph
Answer:
The slope of position-time graph is the velocity of the object understudy
2. In the activities below indicate if friction is useful or not useful? Explain your answer. i. Writing yes it is useful because when your writing because friction helps you see what your writing ii. Rubbing iii. Skiing iv. Rotating a wheel
Answer:
Please find the answer in the explanation
Explanation:
Friction is a force that opposes motion. One or two of the advantages of friction are break and ability of an object to walk.
Writing yes it is useful because when your writing because friction helps you see what your writing
ii. Rubbing. Yes, it is useful.
friction make it possible for two object to rub each other
iii. Skiing. No. It is not useful because With presence of friction, skiing will not be possible.
iv. Rotating a wheel No. It is not useful because Friction will oppose the rotation of the wheel.
describe an example of newton’s 3rd law of motion
Answer:
For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices.
Explanation:
what is the mass of an object that has 324 j of energy and is moving at a speed of 9 m/s
Answer:
324 in ===
Explanation:
Answer:
36 kg
Explanation:
m= ?
KE= 324 J
v= 9 m/s
m= 324 / 9
m= 36 kg
A ball is dropped from an upper floor, some unknown distance above Tom's apartment. As he looks out of his window, which is 1.10 m tall, Tom observes that it takes the ball 0.190 s to traverse the length of the window. Determine how high ℎ above the top of Tom's window the ball was dropped. Ignore the effects of air resistance.
Answer:
The height is 1.20 m above the window.
Explanation:
Given that,
Height of window = 1.10 m
Time = 0.190 sec
We need to calculate the velocity
Using equation of motion
[tex]s=ut+\dfrac{1}{2}gt^2[/tex]
Put the value into the formula
[tex]1.10=u\times0.190+\dfrac{1}{2}\times9.8\times(0.190)^2[/tex]
[tex]1.10=u\times0.190+0.17689[/tex]
[tex]u=\dfrac{1.10-0.17689}{0.190}[/tex]
[tex]u=4.85\ m/s[/tex]
We need to calculate the height
Using equation of motion
[tex]v^2=u^2+2gh[/tex]
Put the value into the formula
[tex](4.85)^2=0+2\times9.8\times h[/tex]
[tex]h=\dfrac{(4.85)^2}{2\times9.8}[/tex]
[tex]h=1.20\ m[/tex]
Hence, The height is 1.20 m above the window.
An old man standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 14 m/s. The cliff is 63.5 m above the water's surface.
a. How long does it take the stone to fall to the water?
b. With what speed does the stone strike the water?
Answer:
a) t=3.6 sec
b) [tex]\mid v \mid =38\ m/s[/tex]
Explanation:
Horizontal Motion
When an object is thrown horizontally with a speed v from a height h, it describes a curved trajectory ruled by a constant speed in the horizontal direction and a variable speed in the vertical direction, where the acceleration of gravity makes the object fall to the ground.
If we know the height h from which the object was launched, the time it takes to hit the ground is:
[tex]\displaystyle t=\sqrt{\frac {2h}{g}}[/tex]
The horizontal speed is always constant:
vx=vo
But the vertical speed depends on the time and acceleration of gravity:
[tex]vy=g\cdot t[/tex]
The magnitude of the velocity or final speed of the object is given by:
[tex]\mid v \mid =\sqrt{vx^2+vy^2}[/tex]
a.
The stone was kicked over the cliff with a speed of v0=14 m/s, and the height it was thrown from is h=63.5 m, thus:
[tex]\displaystyle t=\sqrt{\frac {2\cdot 63.5}{9.8}}[/tex]
t=3.6 sec
b.
The vertical speed is:
[tex]vy=9.8\cdot 3.6[/tex]
vy=35.3 m/s
The final speed is calculated below:
[tex]\mid v \mid =\sqrt{14^2+35.3^2}[/tex]
[tex]\mid v \mid =\sqrt{1,442.09}[/tex]
[tex]\boxed{\mathbf{\mid v \mid =38\ m/s}}[/tex]
Sound energy: chemical energy: mechanical energy:
mechanical energy
Explanation:
its right
Define heat?!........
.
.......
Explanation:
Heat is a form of energy transferred between systems or objects of different temperature.Need HELP ASAP PLEASE THANK YOU TO ANYBODY THAT HELPS!!!!!!!!!!!!!!
Answer:
the slop is y x ray down
Explanation:
. A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
The the ______ is a disposable micro -camera used to take images of the digestive system
Answer:
Capsule (endoscopy)
Explanation:
The capsule endoscopy is a procedure whereby a pill containing a micro-camera is swallowed by a diagnostic patient. The capsule conveniently goes through the patient's digestive system tract and takes several thousands of images of the small and large intestines and as it travels through the digestive tract without causing pain or irritation to the patient.
Answer:
The answer is pill-cam.
Explanation:
1. What is the average speed of a racecar that travels a distance of 230 miles in 2 hours?
Answer:
s = d/t
s = 230/2
s = 115 mph
Explanation:
Average Speed (s) = Distance travelled (d) / Time elapsed (t)
parts of the breathing system
Answer:
it is a branch of tissue and organs . More it includes airways lungs and blood cells The muscles that power our lungs are also part of respiratory system .These parts work together to inhale oxygen and clean out waste materials(carbon dioxide) from our body .
The U.S. uses a household voltage of 110 V. However electric stoves and dryers are wired with 220 V outlet, or a German made 220 V rated curling iron into a 110 V outlet? explain
Students in a lab were given an unknown sample to find the density of. The volume of the unknown sample was 16.8 ml, the calculated mass of the unknown sample was 134.4. What is the density of the unknown sample?
Note: You only have to fill in the numerical answer.
Answer:8
Explanation: 134.4 divided by 16.8
Convert 4 µL to mL
Please help meeeee
Answer:
0.004
Explanation:
1 micrometer= .001 milimeter
so 4 Micrometers= .004 milimeters
please help! I'd really appreciate it :-)
How much is the current in a light bulb whose resistance is 350 ohms when the bulb is connected to a 110-volt outlet?
Answer:
0.31429 Amps
Explanation:
Using the "Ohm's Law" we can look for the current (amps) with a formula of I = V/R
Given:
Resistance (Ohm) = 350
Volts = 110
Solution:
I = 110v/350r
I = 0.31429 amps
Coach Wilkins drops a football from the top of the home bleachers at Tiger Stadium. If the stadium is 17.5 meters tall, how long did it take the ball to fall?
Answer:
it took 70.6 meters for the ball to fall
A rock was dropped from a bridge over a river
If the rock was released when it was 11.2 m above the water and it took 0.550 s to reach the water, what its velocity when it was released?
What are two characteristics of a proton?
A. Found outside the nucleus
O B. Found in the nucleus
C. Negative electric charge
I D. Positive electric charge
SUBM
Answer:
B and D
Explanation:
This is the object of love in philosophy.
a. wisdom b. learning c. intelligence d. human person
Answer:
a
Explanation:
What is used in food preservation?
Answer:
If you are talking about the chemicals...
Explanation:
"Sugar, salt, nitrites, butylated hydroxy anisol (BHA), butylated hydroxyl toluene (BHT), tert-butylhydroquinone (TBHQ), vinegar, citric acid, and calcium propionate are all chemicals that preserve foods. Salt, sodium nitrite, spices, vinegar, and alcohol have been used to preserve foods for centuries."
Hope this is helpful!!
after the Collision the two cars stick together find the initial velocity of the car on the right hand side
In a circuit, a variable resistor is to be connected across a potential difference of 60 volts to allow the current to be adjusted in the range from 40 milliamperes to 100 milliamperes.
A variable resistor is a device in which the resistance can be varied.
mA = milliamperes, or 10-3 amperes
Over what range must the resistance vary?
plz help :')
Answer:
600 and 1500 [ohm
Explanation:
To solve this problem we must use ohm's law, which tells us that the voltage is the product of the current by the resistance, so we have:
V = I*R
where:
V = voltage [V]
I = current [amp]
R = resistance [ohm]
Therefore:
R = V/I
R1 = 60/(40*10^-3) = 1500 [ohm]
R2 = 60/(100*10^-3) = 600 [ohm]
So the resistance should be among 600 and 1500 [ohm]
How would you measure and compare the size of two balls
Explanation:
The letter r stands for the radius of the sphere, which is the distance from the center of a sphere to its surface. The radius is exactly half of the diameter , which is the ...
If a car travels 300 m in 20 seconds how fast is it going?
Answer:
15mph
Explanation:
Because you've already done distance and time. Speed=distance divided by time. so it would be 300 divided by 20 giving you 15.