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
Serggg [28]
3 years ago
9

you start your bicycle ride at the top of a hill. you coast down the hill at a constant acceleration of 2.00 m/s^2. When you get

to the bottom of the hill, you are moving at 18.0 m/s, and you pedal to maintain that speed. If you continue at this speed for 1.00 min, how far will you have gone from the time you left the hilltop
Physics
1 answer:
stiv31 [10]3 years ago
6 0
198 meters I think, I could be wrong
You might be interested in
Question 6 of 10
Anni [7]
The answer is c or b u choose
6 0
3 years ago
The property of matter that describes what it is made of
const2013 [10]

Answer:

Miixture

Explanation:

The answer is mixture

4 0
3 years ago
The voltage ???? in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance ???? is slowly inc
zimovet [89]

Answer:

The change in current at  R =456 \Omega is  \frac{dI}{dt}  = 7.032 * 10^{-5} A/s

Explanation:

From the question we are told that

    The resistance is R = 465 \Omega

     The current is  I = 0.09A

    The change in voltage with respect to time is \frac{dV}{dt}  = - 0.03 V/s

     The change in resistance with time is  \frac{dR}{dt}  =  0.03 \Omega /s

According to ohm's law

        V =  IR

differentiating with respect to time using chain rule

             \frac{dV}{dt}  =  I \frac{dR}{dt} + R * \frac{dI}{dt}

substituting value  at R = 456

             -0.0327 =  0.09 * 0.03 + 456* \frac{dI}{dt}

              \frac{dI}{dt}  = 7.032 * 10^{-5} A/s

6 0
2 years ago
If a boy weighs 490 N and stands on a flat rough surface with a
OleMash [197]

The force of static friction acting on the boy is 333 Newtons.

Hence, option (d) 333N is the correct answer.

Given the data in the question;

  • Weight of boy; F_n = 490N
  • Coefficient of static friction; u_s = 0.68

Force of static friction acting on the boy; F_s = \ ?

<h3>Friction</h3>

Friction is simply referred as the resistance an object experience when moving or trying to move over another object. It can either by dynamic or static.

Static friction is the resistance experienced by a body at rest.

Coefficient of friction is the measure of how easily a body moves in relation to the other.

Static friction is expressed as;

F_s = u_s * F_n

Where F_s is the normal force and u_s is the coefficient of static friction.

We substitute our given values into the equation above

F_s = u_s * F_n\\\\F_s = 0.68 * 490N\\\\F_s = 333.2N\\\\F_s = 333N

The force of static friction acting on the boy is 333 Newtons.

Hence, option (d) 333N is the correct answer.

Learn more friction: brainly.com/question/17237604

8 0
2 years ago
Vector A is 3 units length and points along the positive x-axis vector B is 4 units in length and points along negative y-axis .
iogann1982 [59]

Answer:

a) < 3 , -4 >

b) < 3 , -4 >

Explanation:

a) If you can imagine this, adding vectors is like putting them "tip to tail", where you put the beginning point of vector B to the end point of vector A (or vice versa).  Your new vector (A+B) would be from the "tip" of vector A to the "tail" of vector B.

Mathematically, this is the same as adding the x-components of each vector together as well as the y-components.

Vector A: 3 units along the positive x-axis: < 3 , 0 >

Vector B: 4 units along the negative y-axis: < 0 , -4 >

A+B = < 3 , 0 > + < 0 , -4 > = < (3+0) , (0+(-4)) > = < 3 , -4 >

b) Subtracting is like adding a negative, so you could use the same "tip to tail" visual by adding the negative of vector B instead (which is B in the opposite direction).

Vector A: < 3 , 0 >

Vector B: < 0 , -4 >

Vector -B: < 0 , 4 >

A-B = A+(-B) = < 3 , 0 > + < 0 , 4 > = < (3+0) , (0+4) > = < 3 , 4 >

5 0
2 years ago
Other questions:
  • A. Telephone signals are often transmitted over long distances by microwaves. What is the frequency of microwave radiation with
    5·1 answer
  • If the mass of a material is 106 grams and the volume of the material is 12 cm3, what would the density of the material be?
    7·1 answer
  • What forces affect kinetic energy
    7·1 answer
  • A car is going 3 m/s, then it speeds up for 4 seconds. If it has an acceleration of 5m/s^2, find its final velocity. Which equat
    6·1 answer
  • What is the weight of a 20 kg box on the Earth?<br> A) 2 N <br> B) 20 N<br> C) 200 N
    15·1 answer
  • Hey what is Krichoff rule<br>good morning​
    13·2 answers
  • Which of the following is true for a parallel circuit?
    10·1 answer
  • A box weighing 2.4 x 10^2 Newton's is lifted at a constant speed to a shelf 1.2 meters high in 4.0 seconds. What power is requir
    6·1 answer
  • A 1425 kg truck driving at 13.0 m/s collides elastically with a stationary 1175 kg car. If the car is traveling 14.25 m/s just a
    6·1 answer
  • The voltage across the secondary winding is 10,000 v, and the voltage across the primary winding is 25,000 v. if the primary win
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!