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
saw5 [17]
3 years ago
13

find the work done by the gravity and normal on the particle during its displacement from top to ground.

Physics
2 answers:
grandymaker [24]3 years ago
6 0

Answer:

lol

Explanation:

g100num [7]3 years ago
5 0

Answer:

Based on physical properties, which of these substances is an ionic compound? Explain your reasoning.

A. Hair Gel

B. Silver Breacelet

C. Motor Oil

D. Baking SodaBased on physical properties, which of these substances is an ionic compound? Explain your reasoning.

A. Hair Gel

B. Silver Breacelet

C. Motor Oil

D. Baking SodaBased on physical properties, which of these substances is an ionic compound? Explain your reasoning.

A. Hair Gel

B. Silver Breacelet

C. Motor Oil

D. Baking SodaBased on physical properties, which of these substances is an ionic compound? Explain your reasoning.

A. Hair Gel

B. Silver Breacelet

C. Motor Oil

D. Baking SodaBased on physical properties, which of these substances is an ionic compound? Explain your reasoning.

A. Hair Gel

B. Silver Breacelet

C. Motor Oil

D. Baking Soda

Explanation:

You might be interested in
a student drops an object from the top of a building which is 19.6 m high. How long does it take the object to fall to the groun
zubka84 [21]

Here's a formula that's simple and useful, and if you're really in
high school physics, I'd be surprised if you haven't see it before. 
This one is so simple and useful that I'd suggest memorizing it,
so it's always in your toolbox.

This formula tells how far an object travels in how much time,
when it's accelerating:

               Distance = (1/2 acceleration) x (Time²).

                           D = 1/2 A T²

For your student who dropped an object out of the window,

     Distance = 19.6 m
     Acceleration = gravity = 9.8 m/s²

                                              D = 1/2 G T²

                                          19.6 =   4.9   T²

Divide each side by 4.9 :       4  =           T²

Square root each side:           2  =          T

When an object is dropped in Earth gravity,
it takes  2  seconds to fall the first 19.6 meters.

8 0
3 years ago
Read 2 more answers
A ball is launched vertically with an initial speed of y˙0= 50 m/s, and its acceleration is governed by y¨=-g-cDy˙2, where the a
stira [4]

Answer:

Explanation:

Given

acceleration is given by

a=-g-c_Dv^2

where \ddot{y}=a

\dot{y}=v

Also acceleration is given by

a=v\frac{\mathrm{d} v}{\mathrm{d} s}

ds=\frac{v}{a}dv

\int ds=\int \frac{v}{-g-0.001v^2}dv

\Rightarrow Let -g-0.001v^2=t

-0.001\times 2vdv=dt

vdv=-\frac{dt}{0.002}

at\ v_0=50\ m/s,\ t=-g-0.001(50)^2

t=-g-2.5

at v=0,\ t=-g

\int_{0}^{s}ds=\int_{-g}^{-g-2.5}\frac{-dt}{0.002t}

\int_{0}^{s}ds=\int^{-g}_{-g-2.5}\frac{dt}{0.002t}

s=\frac{1}{0.002}lnt|_{-g}^{-g-2.5}

s=\frac{1}{0.002}\ln (\frac{g+2.5}{g})

s=113.608\ m

when air drag is neglected maximum height reached is

h=\frac{v_0^2}{2g}

h=\frac{50^2}{2\times 9.8}

h=127.55\ m

3 0
3 years ago
The line that is drawn perpendicular to the point at which a wave intersects a boundary is know as the
fomenos
<span>The line that is drawn perpendicular to the point at which a wave intersects a boundary is know as the Normal .

When the normal is drawn, the incident ray makes an angle with it known as the angle of incidence and the reflected ray makes an angle with it known as the angle of incidence. These angles are always equal.
 
The refracted ray makes an angle with the normal known as angle of refraction. The sin of angle of incidence to the sin of angle of refraction is called the refractive index( </span>μ= <span>sin i / sin r) .

hope all of it helps you!</span>
5 0
3 years ago
ear the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of
sesenic [268]

Answer:

a) V_{2/1}=0.8m/s

b) The second runner will win

c) d = 10.54m

Explanation:

For part (a):

V_{2/1} = V_{2} - V_{1} = 0.8m/s

For part (b) we will calculate the amount of time that takes both runners to cross the finish line:

t_{1} = \frac{X_{1}}{V_{1}}=\frac{250}{3.45}=72.46s

t_{2} = \frac{X_{2}}{V_{2}}=\frac{250+45}{4.25}=69.41s

Since it takes less time to the second runner to cross the finish line, we can say the she won the race.

For part (c), we know how much time it takes the second runner to win, so we just need the position of the first runner in that moment:

X1 = V1*t2 = 239.46m  Since the finish line was 250m away:

d = 250m - 239.46m = 10.54m

6 0
3 years ago
Read 2 more answers
find the potential energy of an aircraft weighing 10000 bs at 5000 ft true altitude and 125 kts true air speed
Cloud [144]

Answer:

U=5*10^7ft.Ib

Explanation:

From the question we are told that

Weight  W= 10000bs

Altitude H=5000ft

Speed    V=125kts\\1kts=0.514m/s\\V=125*0.514=>64.25m/s

Generally the equation for Potential energy ids mathematically given as

Potential\ Energy\ U=mgh

U=Wh

U=10000*5000

U=5*10^7ft.Ib

6 0
3 years ago
Other questions:
  • a 0.25 kg arrow is moving at 5 m/s and hits a 0.10 kg apple. The apple sticks to the arrow, and both move to the right together.
    8·1 answer
  • if the same amount of work needed to keep a 100W light bulb lit for one hour could be used to lift a 2000 kg SUV, what height co
    9·1 answer
  • Which of these statements is most likely correct about the Nebular theory of formation of planets?
    7·1 answer
  • How much energy is required to increase the temperature of 36.0 g of H2O from –20 °C to 50 °C, keeping in mind the following: Vi
    5·1 answer
  • When the only force acting on a falling object is air resistance, the object is said to be in free fall. true or false.?
    13·1 answer
  • A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these
    8·1 answer
  • The recoil of a cannon is probably familiar to anyone who has watched pirate movies. This is a classic problem in momentum conse
    5·1 answer
  • An elevator is pulled up by a cable with a force of 65,000 N. The upward acceleration of the elevator is 1.8 m/s/s. What is the
    7·1 answer
  • A balloon contains 0.075 m^3 of
    13·1 answer
  • Medium frequency waves are called what
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!