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
d1i1m1o1n [39]
3 years ago
8

PLEASE HELP ME

Physics
1 answer:
lesya [120]3 years ago
6 0

Answer:

football

Explanation:

it is played on zig-zay way/form

You might be interested in
The normal boiling point of water is 100.0 °c and its molar enthalpy of vaporization is 40.67 kj/mol. what is the change in entr
SashulF [63]
ΔS= nΔHvap/T,

Where, ΔS = Change in entropy, n = moles of water = 39.3/18 = 2.188 moles, ΔHvap = 40.67kJ/mol = 40670 J/mol, T = Temperature (K) = 100+272.15 = 373.15 K

Therefore,
ΔS = (2.188*40670)/373.15 = 237.96 J/K
6 0
3 years ago
An instrument is defective for all of the following conditions EXCEPT:_______
NARA [144]

Answer:

I believe its C

6 0
4 years ago
A brick lands 10.1 m from the base of a building. If it was given an initial velocity of 8.6 m/s [61º above the horizontal], how
Montano1993 [528]
<h2>Answer: 10.52m</h2><h2 />

First, we have to establish the <u>reference system</u>. Let's assume that the building is on the negative y-axis and that the brick was thrown at the origin (see figure attached).

According to this, the initial velocity V_{o} has two components, because the brick was thrown at an angle \alpha=61\º:

V_{ox}=V_{o}cos\alpha   (1)

V_{ox}=8.6\frac{m}{s}cos(61\º)=4.169\frac{m}{s}  (2)

V_{oy}=V_{o}sin\alpha   (3)

V_{oy}=8.6\frac{m}{s}sin(61\º)=7.521\frac{m}{s}   (4)

As this is a projectile motion, we have two principal equations related:

<h2>In the x-axis: </h2>

X=V_{ox}.t  (5)

Where:

X=10.1m is the distance where the brick landed

t is the time in seconds

If we already know X and V_{ox}, we have to find the time (we will need it for the following equation):

t= \frac{X}{ V_{ox}}  (6)

t=2.42s  (7)

<h2>In the y-axis: </h2>

-y=V_{oy}.t+\frac{1}{2}g.t^{2}   (8)

Where:

y is the height of the building (<u>in this case it has a negative sign because of the reference system we chose)</u>

g=-9.8\frac{m}{s^{2}} is the acceleration due gravity

Substituting the known values, including the time we found on equation (7) in equation (8), we will find the height of the building:

-y=(7.521\frac{m}{s})(2.42s)+\frac{1}{2}(-9.8\frac{m}{s^{2}}).(2.42s)^{2}   (9)

-y=-10.52m   (10)

Multiplying by -1 each side of the equation:

y=10.52m >>>>This is the height of the building

3 0
3 years ago
When work is done on an object , the results is an increase in its what
Ksju [112]

Answer:Im guessing Mechanical Energy

Explanation:

We are learning that work and energy work hand in hand so im completely guessing this

5 0
3 years ago
Read 2 more answers
You hold a small metal ball of mass a height above the floor. You let go, and the ball falls to the floor. Choose the origin of
baherus [9]

Answer:

yᵢ = h

vᵢᵧ = 0

Explanation:

Let initial velocity = u

     final velocity = v

     height = h

     acceleration due to gravity = g

Therefore fro equation of motion,

v^{2}=u^{2}+2gh

Here initial velocity is zero.

Hence, v^{2}=2gh

v = \sqrt{2gh}

but since it points downward and you positive is taken in the up direction

v = -\sqrt{2gh}

5 0
4 years ago
Other questions:
  • Initially the clean air act of 1990 required ___ of the nationâs dirtiest coal burning plants to cut down on emissions
    13·1 answer
  • When two resistors are wired in series with a 12 V battery, the current through the battery is 0.30 A. When they are wired in pa
    6·1 answer
  • Imagine that you are baking brownies for a bake sale at school. 
    13·1 answer
  • On the day of the vernal equinox, the day length for all places on Earth is actually slightly longer than 12 hours. Explain why.
    15·1 answer
  • Someone please helpp!
    7·1 answer
  • How can velocity change even if speed stays the same?​
    8·1 answer
  • The low-frequency speaker of a stereo set has a surface area of and produces 1W of acoustical power. What is the intensity at th
    14·1 answer
  • In which state of matter do the particles have the most energy? (2 points)
    7·2 answers
  • What are conservation area?<br>Write in simple words.<br><br>Hurry up​
    9·2 answers
  • Which picture shows a boat riding on a trough?<br> Select one:<br> a. A<br> b. B<br> c. C<br> d. D
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!