1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kumpel [21]
3 years ago
5

i need some help getting started on an essay for physics. i decided on the topic of roller costers and dont know how to start it

. see the image on my requirements.​

Physics
1 answer:
marshall27 [118]3 years ago
6 0

Explanation:

force , motion , electric current

You might be interested in
The point of origin of an epileptic seizure is called the ____.â
djyliett [7]
The point of origin of an epileptic seizure is called the focus. It is the part of the brain that is affected by epilepsy. This is a term used for people with partial epilepsy. The focus can be the frontal lobe, occipital lobe, mesial temporal lobe or the parietal lobe. During seizures, it is the that specific part of the brain that is being effected.  Seizures happen when a surge in the electrical activities happen on certain parts. Symptoms are contractions of the muscles, blackouts and visual disturbances. Seizures can be cured and, for partial epilepsy, they are treated with AEDs or antiepileptic drugs.
3 0
3 years ago
If |v|= 11, |w|= 23, |v-w|= 30, find |v+w|​
GenaCL600 [577]

Answer:

|v+w|=20

Explanation:

We are given that

|v|=11

|w|=23

|v-w|=30

We have to find the value of |v+w|

|a-b|^2=(a+b)\cdot (a+b)=a^2+b^2-2|a||b|cos\theta

Using the formula

(30)^2=(11)^2+(23)^2-2(11)(23)cos\theta

900=121+529-506cos\theta

900-121-529=-506cos\theta

250=-506cos\theta

cos\theta=-\frac{250}{506}

|a+b|^2=|a|^2+|b|^2+2a\cdot bcos\theta

Using the formula

|v+w|^2=(11)^2+(23)^2+2(11)(23)\times (-\frac{250}{506})

|v+w|^2=400

|v+w|^2=(20)^2

|v+w|=20

7 0
3 years ago
Ultrasound is used to scan the unborn baby of a pregnant mother.
hram777 [196]
Explanation:

Echo method formula for speed of sound : 2 x distance / time taken

2 x distance / 58 = 1540 m/s
2 x distance = 1540 m/s / 58 s
= 26.55172414 m
Distance = 26.55172414 / 2
= 13.27586207
= 13 m
4 0
2 years ago
Water accelerated by a nozzle to 35 m/s strikes the vertical back surface of cart moving horizontally at a constant velocity of
tangare [24]

Answer:

a) The brake force = -535.7N

b) acceleration = - 1.2m/s^2

Explanation: Please find the attached files for the solution.

3 0
3 years ago
Give reason 1)voltmeter is always connected in parallel 2)ammeter is always connected in series
77julia77 [94]

Answer:

1)objects in parallel experience the same potential difference.Therefore the voltmeter is connected in parallel to the object for which we want to calculate the P.d

2}objects in series in a circuit experiance

the same current thus they have to be in series to have the same exact current

Explanation:

n\

8 0
3 years ago
Other questions:
  • Sue and Sean are having a tug-of-war by pulling on opposite ends of a 5.0-kg rope. Sue pulls with a 15-N force. What is Sean's f
    15·1 answer
  • Actual time which is measured in years is aslo known as
    15·1 answer
  • A child with mass 40 kg sits on the edge of a merry-go-round at a distance of 3.0 m from its axis of rotation. The merry-go-roun
    9·1 answer
  • What is a scientific law
    6·1 answer
  • Starting from rest, a runner reaches a speed of 2.8 m/s in 2.1 s. In the same time 2.1 s time, a motorcycles increases speed fro
    13·1 answer
  • The number of electorn is morn than proton in nuclie. why?​
    8·1 answer
  • Pls help! <br> What is movement of energy from one system to another also known as?
    11·1 answer
  • What is the correct term for the people who came before us?​
    6·2 answers
  • An 85 kg man stands in a very strong wind moving at 15 m/s at torso height. As you know, he will need to lean in to the wind, an
    14·1 answer
  • A continental polar air mass forms in
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!