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
Ganezh [65]
3 years ago
5

A runner hopes to complete the 10,000m run in less than 30,0min, after running at constant speed for exactly 27.0 min , there ar

e still 1100m to go . The runner must then accelerate at 0.20 m/s2 for how many seconds in order to achieve the desired time ?
Physics
1 answer:
tankabanditka [31]3 years ago
3 0
Well I figured out at his current pace, he would finish the 1100 remaining meters in 200 seconds. However, he needs to complete it in 180 seconds. I'm not sure how to find out how long he has to accelerate at 0.20 m/s/s to complete it in 180 seconds.

You might be interested in
What is the special name for doctors who deal with cancer?
Sladkaya [172]
Oncology is the study of cancer, so the doctors are called oncologists
8 0
4 years ago
Read 2 more answers
Un avión de rescate en Alaska deja caer un paquete de provisiones a un grupo de exploradores extraviados. Si el avión viaja hori
posledela

Answer:

180.4 m

Explanation:

The package in relation to the point where it was released falls a certain distance that is calculated by applying the horizontal motion formulas , as the horizontal speed of the plane and the height above the ground are known, the time that It takes the package to reach its destination and then the horizontal distance (x) is calculated from where it was dropped, as follows:    

$V_{ox}=v_x = 40 \ m/s$

   h = 100 m  

    x =?

     Height formula h:

     $h=g \times \frac{t^2}{2}$

      Time t is cleared:

     $t = \sqrt{\frac{2h}{g}}$

      $t = \sqrt{\frac{2 \times 100}{9.8}}$

      t = 4.51 sec

 Horizontal distance formula x:

       $x=V_x \times t$

        x = 40 m / sec x 4.51 sec

        x = 180.4 m

4 0
3 years ago
What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels evenly at 70 km/h?
Aleonysh [2.5K]
Formula for kinetic energy is 1/2mv^2 so that answer should most probably be 94521.6J
5 0
3 years ago
A steel wire in a piano has a length of 0.680 m and a mass of 4.600 ✕ 10⁻³ kg. To what tension must this wire be stretched so th
garik1379 [7]

Answer:

728 N

Explanation:

L = length of the wire = 0.680 m

m = mass of the steel wire = 0.0046 kg

f = Fundamental frequency = 261.6 Hz

T = tension force in the steel wire

Fundamental frequency in wire is given as

f = \frac{1}{2L} \sqrt{\frac{TL}{m} } \\261.6 = \frac{1}{2(0.680)} \sqrt{\frac{T(0.80)}{0.0046} }\\(2) (0.680) (261.6) = \sqrt{\frac{T(0.80)}{0.0046} }\\355.8 = \sqrt{\frac{T(0.80)}{0.0046} }\\355.8^{2} = \frac{T(0.80)}{0.0046}\\T = \frac{(355.8^{2}(0.0046))}{0.80} \\T = 728 N

3 0
3 years ago
How do you do this problem?
mojhsa [17]

Answer:

C

Explanation:

When A and B come in contact with each other, +12 - 12 = 0 so their changes cancel.

Now C has a charge of +12

When A and C come together they each have an equal share of that 12, so each of them has 6

So the answer is

A       B       C

6        0       6

which is C

4 0
3 years ago
Other questions:
  • A mass m0 is attached to a spring and hung vertically. The mass is raised a short distance in the vertical direction and release
    8·1 answer
  • A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the most likel
    5·2 answers
  • A baseball approaches home plate at a speed of 44.0 m/s, moving horizontally just before being hit by a bat. The batter hits a p
    15·1 answer
  • A point source emits 50.0 W of sound isotropically. A small microphone intercepts the sound in an area of 0.30 cm", 85 m from th
    12·1 answer
  • A car accelerates from rest. It reaches a velocity of 25m/s in 10 seconds. What was the cars acceleration?
    7·1 answer
  • The 8.1 N weight is in equilibrium under the influence of the three forces acting on it. The F force acts from above on the left
    10·1 answer
  • In the long jump, an athlete launches herself at an angle above the ground and lands at the same height, trying to travel the gr
    13·1 answer
  • What is the necessary conditions for the production of sound?
    15·1 answer
  • How do I find force?
    12·2 answers
  • Of the 50 U.S. states, 4 have names that start with the letter W.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!