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
Aleks04 [339]
3 years ago
14

A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature

of 115m. At the very bottom, the normal force on the driver is twice his weight. At what speed was the car traveling?
Physics
1 answer:
mina [271]3 years ago
6 0

Answer:33.58794 m/s

Explanation : fCenrtipetal force = mv2/r

m = Mass of car

r = Radius of curvature = 115 m

g = Acceleration due to gravity = 9.81 m/s²

The normal force is given by

N=Fc+mg

At the bottom N = 2N

2mg=fc+mg

⇒2mg=mv2

The car was traveling at the speed of 33.58794 m/s

You might be interested in
Chintu and raven build a roccket, which moved from the earth to about 86m into the shy. It tales 3.7 seconds to reach the rocket
vaieri [72.5K]

   Speed = (distance covered) / (time to cover the distance)..

From the ground to the highest point,
the rocket's AVERAGE speed is

                     (86 m) / (3.7 sec)  =  23.2 m/s  (rounded) .
5 0
3 years ago
Which of the following would decrease your carbon footprint?
salantis [7]
The third option seems correct. Using any bag more than once will help in decreasing the carbon foot print.

This isds beause, if you use paper bag once only, then paper bag is being utilised and more and more paper is being used. So the best way is to use the bag more than once, whichever bag u are using.
7 0
3 years ago
Read 2 more answers
Two charges repel one another. What must be the case?
Nadya [2.5K]

Answer:

the answer is d

Explanation:

I hoped that helped

3 0
3 years ago
1.
dsp73
1. If my memory serves me well, the answer is: A lake may disappear for all the following reasons except <span>vegetarian and sediment build up in the bottom. Sediment is usually is a part of Lake's bed.

3. In my opinion, i</span>f tectonic movement caused an uplift of the land on which a river ran, t<span>he gradient would decrease, thus increasing stream speed and erosion. It would be very high speed erosion because of the force caused by water descending.  

5. As I know, Pennsylvania is located</span><span> in the </span>north east <span>and m</span>id-atlantic<span> parts of the </span>US. According to its location, the answer is: Spring – Due to melting snow and increased rainfall.
<span>
6. The answer is: </span><span>The perched water table is above it. I've attached an illustration below to make it clear. You'll get it.
</span>
8. If I was hiking and wanted to find a source of fresh water, I'd look for a<span>n area with lots of cracks that allows groundwater to flow to the surface so you could drink from an ordinary spring. It's not the easiest way, as it's hard to find, but this water will be the most safe.

13. I'm definitely sure that the most possible answer is that t</span><span>he oil can make its way into the watershed that many communities share. 

14. I think that </span><span>the main disadvantage against relying on desalination is the amount of water needed. It takes really a lot of water so it's 100% correct.</span>

7 0
3 years ago
CAN YOU HELP ME IN THE FOLLOWING EQUATION THE SPEED IS V = A + BT. DETERMINE THE DIMENSIONS OF A AND B
Arturiano [62]

Answer:

A = [m/s]

B = [m/s²]

Explanation:

Assuming that V has SI units of m/s, then A and BT must also have units of m/s.

A = [m/s]

BT = [m/s]

Since T has SI units of s:

B [s] = [m/s]

B = [m/s²]

4 0
3 years ago
Other questions:
  • What forms of energy are produced by a violin
    8·1 answer
  • How do I find deceleration
    14·1 answer
  • Grinding Wheat into flour is a.<br> A. Physical change B. Chemical Change
    11·2 answers
  • Why do scientists use the scientific method when completing experiments.
    13·1 answer
  • There are many types of factors that have an effect on the force of gravity on an elephant. Which factor will LEAST affect the f
    7·2 answers
  • A ball is thrown upward with a speed of 28.2 m/s.A. What is its maximum height?B. How long is the ball in the air?C. When does t
    10·1 answer
  • What is the power of a 12 V, 50 A light?
    14·1 answer
  • if the radius of the capillary tube is doubled, what changes will take place in the hieght of rise of liquid with capacity tube
    6·1 answer
  • What are the precautions for compound Pendulum experiment​
    8·1 answer
  • Do anyone know this ?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!