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
Fiesta28 [93]
2 years ago
15

A ball is projected with an angle o from the top of a tower of height h with velocity vo. The ball strikes the ground after a ce

rtain time t, then show a vo sino 2gh 1 + 1 + vo-sin20 t/​
Physics
1 answer:
Lostsunrise [7]2 years ago
5 0

Answer:

dvnuncxtumvd7ojf433f and tv36v54f vs Craig

You might be interested in
What is another word for cycles per second??
Hatshy [7]
Frequensey or hertz, I looked this up on the internet!
5 0
2 years ago
When does a star reach equilibrium?
LenaWriter [7]
A protostar reaches equilibrium when gravity is balanced by the outward force of nuclear fusion. 
6 0
3 years ago
A 1.60 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a constant potential difference of 1
bija089 [108]

1.

Answer:

Part a)

\rho = 1.35 \times 10^{-5}

Part b)

\alpha = 1.12 \times 10^{-3}

Explanation:

Part a)

Length of the rod is 1.60 m

diameter = 0.550 cm

now if the current in the ammeter is given as

i = 18.7 A

V = 17.0 volts

now we will have

V = I R

17.0 = 18.7 R

R = 0.91 ohm

now we know that

R = \rho \frac{L}{A}

0.91 = \rho \frac{1.60}{\pi(0.275\times 10^{-2})^2}

\rho = 1.35 \times 10^{-5}

Part b)

Now at higher temperature we have

V = I R

17.0 = 17.3 R

R = 0.98 ohm

now we know that

R = \rho \frac{L}{A}

0.98 = \rho' \frac{1.60}{\pi(0.275\times 10^{-2})^2}

\rho' = 1.46 \times 10^{-5}

so we will have

\rho' = \rho(1 + \alpha \Delta T)

1.46 \times 10^{-5} = 1.35 \times 10^{-5}(1 + \alpha (92 - 20))

\alpha = 1.12 \times 10^{-3}

2.

Answer:

Part a)

i = 1.55 A

Part b)

v_d = 1.4 \times 10^{-4} m/s

Explanation:

Part a)

As we know that current density is defined as

j = \frac{i}{A}

now we have

i = jA

Now we have

j = 1.90 \times 10^6 A/m^2

A = \pi(\frac{1.02 \times 10^{-3}}{2})^2

so we will have

i = 1.55 A

Part b)

now we have

j = nev_d

so we have

n = 8.5 \times 10^{28}

e = 1.6 \times 10^{-19} C

so we have

1.90 \times 10^6 = (8.5 \times 10^{28})(1.6 \times 10^{-19})v_d

v_d = 1.4 \times 10^{-4} m/s

8 0
3 years ago
Do tides depend more on the strength of gravitational pull or on the difference in strengths? explain.
SSSSS [86.1K]
Tides are influenced by the force of gravity exerted by the earth, moon and the sun. The sun has a larger mass than the moon and as such has a greater gravitational pull on the earth. the moon however has greater influence over the tides because they are caused by the difference in gravity fields. This means that the moon is the dominant influence due to the fact that the fractional difference in its force across the earth is greater than that seen from the sun. 
8 0
2 years ago
In __________ waves, the motion of the particles in a medium is along the direction of the wave (parallel). *
True [87]
Longitude is the answer

7 0
2 years ago
Other questions:
  • A rocket is launched at the rate of 11 feet per second from a point on the ground 15 feet from an observer. to 2 decimal places
    9·2 answers
  • What are 2 different ways you can improve your endurance, muscular strength, flexibility, and body composition before your next
    5·1 answer
  • Chemicals in the air can combine with rain to produce acid rain, which is harmful to the environment. Which of these is most lik
    6·1 answer
  • An 85 kg dog is sitting on a couch what is the weight of the dog
    14·2 answers
  • When he sees teachers encouraging other children to wait in the cafeteria until the first bell rings, Ian follows them. What typ
    11·2 answers
  • Suppose you are driving a car around in a circle of radius 212 ft, at a velocity which has the constant magnitude of 43 ft/s. A
    9·1 answer
  • Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of 1.45 eV. What is the work functio
    6·1 answer
  • List the three ways in which water reaches the atmosphere and tell which way accounts for the most of the water in the atmospher
    10·1 answer
  • What is seen as the creative force in the universe through which all things are connected?
    5·1 answer
  • The moon is 384,403 km from the earth how many quarters laid end to end it would take to reach the moon if a quarter has a diame
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!