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
Talja [164]
3 years ago
11

Question 7 Unsaved Brycen can cover half a basketball court (about 14 meters) in 4.0 seconds flat! How fast can he run? Question

7 options:
18 m/s


10 m/s


3.5 m/s


0.28 m/s
Physics
1 answer:
lana66690 [7]3 years ago
7 0

D = distance traveled = 14 m

t = time taken = 4 sec

v = speed of Brycen

the formula that relates speed, time and distance is given as

speed = distance/time

speed of Brycen is given as

v = D/t

inserting the values

v = 14/4

v = 3.5 m/s

You might be interested in
Sand falls from an overhead bin and accumulates in a conical pile with a radius that is always threethree times its height. Supp
hammer [34]

Answer:

159241.048 cm³/s

Explanation:

r = Radius = 3×height = 3h

h = height = 16 cm

Height of the pile increases at a rate = \frac{dh}{dt}=22\ cm/s

\text{Volume of cone}=\frac{1}{3}\pi r^2h\\\Rightarrow V=\frac{1}{3}\pi (3h)^2h\\\Rightarrow V=3\pi h^3

Differentiating with respect to time

\frac{dv}{dt}=9\pi h^2\frac{dh}{dt}\\\Rightarrow \frac{dv}{dt}=9\pi 16^2\times 22\\\Rightarrow \frac{dv}{dt}=159241.048\ cm^3/s

∴ Rate is the sand leaving the bin at that​ instant is 159241.048 cm³/s

5 0
3 years ago
In order to protect underground pipelines and storage tanks made of iron, the iron is made the cathode of a voltaic cell through
emmasim [6.3K]

The answer would be that the process to protect the underground pipelines and storage tanks is cathodic protection.

3 0
3 years ago
A large crate is suspended from the end of a vertical rope. Is the tension in the rope greater when the crate is at rest or when
choli [55]

Answer:

Part a)

the tension force is equal to the weight of the crate

Part b)

tension force is more than the weight of the crate while accelerating upwards

tension force is less than the weight of crate if it is accelerating downwards

Explanation:

Part a)

When large crate is suspended at rest or moving with uniform speed then it is given as

F_t - mg = ma

here since speed is constant or it is at rest

so we will have

a = 0

F_t = mg

so the tension force is equal to the weight of the crate

Part b)

Now let say the crate is accelerating upwards

now we can say

F_t - mg = ma

F_t = mg + ma

so tension force is more than the weight of the crate

Now if the crate is accelerating downwards

F_t - mg = -ma

F_t = mg - ma

so tension force is less than the weight of crate if it is accelerating downwards

4 0
3 years ago
HELP PLEASE 100 POINTS!
erica [24]
Yes the relationship between them is direct linear ..
4 0
3 years ago
Read 2 more answers
Do electromagnetic waves require matter to travel?
VMariaS [17]

Answer:

No.

Explanation:

Electromagnetic waves do not require a medium of matter to move through, electromagnetic waves are used in things like your cell phone and telecommunications.

6 0
2 years ago
Other questions:
  • If baseball A is thrown horizontally, it will travel a certain distance horizontally. If the identical baseball B is thrown hori
    11·1 answer
  • the structure shown in the picture is made of copper. The three thin rods are of equal dimensions. The single main rod is heated
    9·2 answers
  • What is the energy of a photon whose frequency is 5.0x10^14 hz
    5·1 answer
  • Ben is exercising his pony on a large oval track. The long is trotting at a constant speed of 10 m/s around the track. Which sta
    8·1 answer
  • In chemistry class, you are given 3 liquids: Liquid A, Liquid B, and Liquid C. They are each in their own beaker. One of these l
    9·1 answer
  • What is the tool used for classifying organisms called? A. Dichotomy B. Dichotomous key C.Dichromic key D. Periodic table
    9·1 answer
  • 20 points please helppp me I’m begging u this is due soon please come on ????? Anyone
    6·2 answers
  • The change in frequency of a wave as its source moves in relation to an observer.
    6·1 answer
  • In Eric's planning to take photos of the Plato Crater, Copernicus Crater and Rupes Cauchy Crater, he is trying to
    8·1 answer
  • A very rigid material—one that stretches or compresses only slightly under large forces—has a large value of __________.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!