Answer:
7.5s1.6666 repeating or 1.67 m/s²Explanation:
the equation you have to use is Vfinal=Vstart+acceleration•time(I'm gonna simplify to Vf=Vs+at)
so you gotta rework it for the two equationsfor the first equation you need time so take Vf=Vs+at and subtract Vs on both sides to get Vf–Vs=atthen divide acceleration on both sides to get t=(Vf–Vs)/afor the second problem equation need the equation a=(Vf–Vs)/t (just divide time on both sides instead of acceleration)so you the plug in(I don't put the units in to the problem unless needed)
1. t=(Vf–Vs)/a to t=(0–30)/-4.0
t= -30/-4.0t=7.5 seconds2. a=(Vf–Vs)/t to a=(10–0)/6.0
a= 10/6.0a= 1.67m/s²(I'm assuming the that for number two they started at rest so it would be 0m/s for velocity start)
If two objects with static charge are attracted what do you know about them?
Which describes one event that causes an eclipse?
Pick One.
Earth’s rotation on its axis
shadows from clouds covering Earth
Earth’s shadow covering the moon
the gravity from the moon and Sun pulling in the same direction
Answer:
c. earth's shadow covering the moon
Explanation:
One thing that produces an eclipse is when Earth's shadow covers the moon and the moon and Sun's gravitational pull on each other. Option C is correct.
What is a solar eclipse?When the moon passes in front of Earth and the sun, it creates a solar eclipse and casts a shadow across the globe.
A solar eclipse can occur only during the new moon phase when the moon travels squarely between the sun and Earth and casts shadows on its surface.
Earth’s shadow covers the moon the gravity from the moon and Sun describes one event that causes an eclipse.
Hence option C is correct.
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Is image 2 correct?
Yes
or
No
When the steel ball drops on the constant velocity cart, it follows a ____ path in the frame of reference fixed to the ____, but a ____ straight line in the frame of reference of the constant velocity cart. Without a fixed reference frame, one cannot tell whether or not you are in a ____ frame of reference. All frames of reference moving at constant velocity with respect to one another are__equivilent__.
Answer:
PARABOLIC, EARTH, VERTICAL, INERTIAL ang PHYSICAL LAWS
Explanation:
In this exercise you are asked to complete the missing words.
When the steel ball falls on the constant speed car, it follows a PARABOLIC path in the reference frame fixed to EARTH, but a VERTICAL straight line in the reference frame of the constant speed car. Without a fixed frame of reference, you cannot tell whether or not you are in an INERTIAL frame of reference. All frames of reference that move at constant speed relative to each other are PHYSICAL LAWS__equivilent__.
\ r
If an object was accelerating at 10 m/s2, and a mass of 1 kg, what was size of the force acting on the object?
20 Newtons
10 Newtons
1 Newton
5 Newtons
Answer:
10 N
Explanation:
[tex]f = ma[/tex]
= 10m/s^2 * 1 kg
=10N
Lena is playing with a remote-controlled car in her backyard. She knows that the car uses a wheel and axle to move. What is the primary source of power for the wheel and axle in the remote-controlled car?
A.
friction between the ground and the tires
B.
radio waves from the remote control
C.
chemical energy from the batteries
D.
potential energy with the car sitting at the top of a small hill
The primary source of power for the wheel and axle in a remote-controlled car would be:
- Chemical energy from the batteries.
Chemical Energy
The key source that offers power to the wheel, as well as, the axle in the remote-controlled car would be 'the chemical energy that is released from the batteries.'These chemical energies would allow the car to function on the commands given by the remote. Thus, 'chemical energy' is the correct answer.Learn more about "Wheel and Axle" here:
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Miranda drives her car clockwise around a circular track of radius 25 m. She
completes 13 laps around the track in 5 minutes. Find Miranda's total distance
traveled
Speed is
O B. zero for objects at rest
D. all of the above
C.a measure of how quickly an object gets from one place to another
O A. calculated by dividing the distance traveled by the time taken
Answer: zero for objects at rest
Explanation:
Answer:
D. all of the above all are correct one.
Explain Newton's 2nd Law of Gravity in your own words ?
Answer:
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
how to convert 40m/min to km/h? need step by step explanation
How to convert m/sec into km/hr
1 m = 1/1000 km; 1 sec = 1/3600 hr
1 m/sec = 3600/1000 km/hr = 18/5 km/hr
To convert m/sec into km/hr, multiply the number by 18 and then divide it by 5.
Need detail explanation? Go to bottom
Solved Example 1:
Convert 20 m/sec into km/hr.
Solution:
20 m/sec
Step 1:
Multiply 20 by 18
We have 20 * 18 = 360
Step 2:
Divide 360 by 5
360/5 = 72
Final Answer:
20 m/sec = 72 km/hr
Try yourself: Practice Sheet 1
Solved Example 2:
Convert 36 m/sec into km/hr.
Solution:
36 m/sec
Step 1:
Multiply 36 by 18
We have 36 * 18 = 648
Step 2:
Divide 648 by 5
648/5 = 129.6
Final Answer:
36 m/sec = 129.6 km/hr
Try yourself: Practice Sheet 2
Better Understanding:
The problem can be solved using an unitary method.
A shopkeeper sells each pencil for 5 cents. How much do 4 pencils cost? 4 * 5 cents= 20 cents, isn't it? What is the cost of 7 pencils? Yes, your guess is right. It is 7 * 5 cents = 35 cents.
Let us work out the problem in example 1 as it explained here.
20 m/sec = 360/5 = 72 km/hr
What are the variables do you think to be considered to determine the acceleration of an object?
An object has a variable volume and shape before it changes state. After the
change, it can still change in shape but has a fixed volume. Which change of
state has occurred?
A. Solid to liquid
B. Gas to plasma
O C. Liquid to gas
O D. Gas to liquid
SUBMIT
Answer:
it is gas to liquid
Explanation: ap3x
Of all the health and wellness careers, which one has the least opportunity for future job growth?
A. physical therapist
B. sports physician
C. nutritionist
D. group fitness instructor
Answer:
The answer is c.nutritionist
Explanation:
because they are a g
Of all the health and wellness careers, the one has least opportunity for future job growth is nutritionist. The correct option is C.
What is career?Career is the most important phase of one's life. This helps a person financially independent by doing job or business.
Currently fitness is all over the people's mind. But the career as a nutritionist has less important or less interest.
Thus, the one has least opportunity for future job growth is nutritionist.
Learn more about career.
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ILL GIVE BRAINLY THING
If the mass of the chess piece in question 5 is 24 g what is the density of the chess piece?
Answer:
lol i went by 1 cubic inches and the answer i got was 91.3834
Explanation:
A car is travel with velocity of 150 km/hr east. It traveled a distance of 500 km. How long did it travel for.
Explanation:
V= s / t
150 km/hr = 500 km / t
t = 500 km ÷ 150 km/hr
t = 10/3 hr (3 hrs 19 mins 49 sec)?
I'm not sure tho^^
Answer:
[tex]\boxed {\tt \frac{10}{3} \ hours}[/tex]
Explanation:
Time can be found by dividing the distance by the velocity. Use the following formula:
[tex]t=\frac{d}{v}[/tex]
The distance traveled was 500 kilometers. The velocity is 150 kilometers per hour.
[tex]d= 500 \ km \\v= 150 \ km/hr[/tex]
[tex]t=\frac{500 \ km} {150 \ km/hr}[/tex]
Divide. Note that the kilometers, or km, will cancel each other out.
[tex]t=\frac{500 \ }{150 \ hr}[/tex]
[tex]t=\frac{10}{3} \ hr[/tex]
[tex]t=3.3333333 \ hr[/tex]
The car traveled for 10/3 or 3.3333 hours
What is the wavelength of a water wave that is moving at 12 m/s with a frequency of 3 Hz?
Answer:
it is 4m
Explanation:
i will give u brainliest!
Answer:
True
Explanation:
idk
In the example of jumping off a chair, what is the impulse that will stop your fall?
Answer:
You will reach both your arms out to break your fall and save your head.
Explanation:
It common sense you don't want your head injured. Do you?
What does the Bohr Model show us?
1.The number of neutrons
2.The number of electrons
3.The number of protons
Answer:
2
Explanation:
Answer:The number of electrons
Explanation:
Why doesn't the moon hit Earth's
surface?
Calculate the potential energy of a rock with a mass of 5 kg while sitting on a cliff that is 30
m high
solution.
given,
mass= 5kg
height= 30m
acceleration =9.8m/s^2 or 10m/s^2
P.E=mgh
=5×30×10
=1500 joule.
state Newton's second law of
motion and write down
three examples to
justity it.
Answer:
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
[tex]f = m \times a[/tex]
f= force
m=mass
a=acceleration
Explanation:
examples:
riding your bicycle
•your bicycle is the mass, your leg pushing in pedals of your bicycle is the force
pushing a box
•the box is the mass, you are pushing the box
setting a pencil down in a table
•the pencil is the mass, you are puting the pencil down
what is the volume of a bar of soap that is 9 cm long, 5 cm wide, and 2 cm high?
Answer: 90
Explanation: To find volume, you multiply length x width x height. 9*5*2=90.
on a standard position vs time graph, the distance between two points on the horizontal axis represents the time interval, and the distance between two points on the vertical axis is the displacement. the slope of the line represents the average velocity
Answer: true
Explanation: I got the question and guessed true and it was right
a jogger runs a distance of 100m and accomplished his feat in 30secs . What was his speed?
Answer:
His speed was 3.3
Explanation:
To find his speed all you have to do is to divide his distance ÷ time. Since your solving for speed all you do is divide distance ÷ time to find out your speed.
8. What are elastic and inelastic collisions?
An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are conserved quantities in elastic collisions.
An inelastic collision is a collision in which there is a loss of kinetic energy. While momentum of the system is conserved in an inelastic collision, kinetic energy is not. This is because some kinetic energy had been transferred to something else.
How are doctors both accurate and precise when preforming surgery or other things?
Answer:
learning about the different functions of the body and therefore they have enough practice in order to have a clean and safe operation
Explanation:
Which of the following is NOT a vector quantity? displacement
speed
acceleration
force
Answer:
Displacement
Explanation:
What is the energy of electric charges?
Answer:
Electric potential energy, or Electrostatic potential energy, is a potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.
Explanation:
Which statement explains what happens to older crust during seafloor spreading?
It is destroyed at coastlines.
It moves under continents.
It is destroyed at a mid-ocean ridge.
It moves away from a mid-ocean ridge.
Answer:
the last one, It moves away from a mid-ocean ridge.
Answer:
D
Explanation:
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