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
Anton [14]
3 years ago
13

The battery in the drone can store 97.5 kJ of energy. When the drone is hovering, the power output of the battery is 65.0 W Calc

ulate the time for which the drone can hover.
Physics
1 answer:
Volgvan3 years ago
7 0

Answer: 1500 seconds

Explanation:

E = 97.5 kJ = 97500 J

P = 65 W

t = ?

t = 97500/65

t = 1500 sec

You might be interested in
In freefall, heavier objects fall with a greater acceleration than lighter objects.
Rom4ik [11]

Answer:

That is not true all objects fall at the same speed excepts things like feathers or paper.

6 0
3 years ago
Read 2 more answers
A horizontal uniform bar of mass 2.5 kg and length 3.0 m is hung horizontally on two vertical strings. String 1 is attached to t
11Alexandr11 [23.1K]

Answer: I am not sure if you wanted me to answer this or not.

Explanation:

6 0
2 years ago
If a 54 kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?
lora16 [44]

Answer:

Power, P = 600 watts

Explanation:

It is given that,

Mass of sprinter, m = 54 kg

Speed, v = 10 m/s

Time taken, t = 3 s

We need to find the average power generated. The work done divided by time taken is called power generated by the sprinter i.e.

P=\dfrac{W}{t}

Work done is equal to the change in kinetic energy of the sprinter.

P=\dfrac{\dfrac{1}{2}mv^2}{t}

P=\dfrac{\dfrac{1}{2}\times 54\ kg\times (10\ m/s)^2}{3\ s}

P = 900 watts

So, the average power generated by the sprinter is 900 watts. Hence, this is the required solution.

3 0
3 years ago
An electron in a cathode-ray beam passes between 2.5cm long parallel-plate electrodes that are 6.0mm apart. A 2.1mT, 2.5-cm-wide
Dmitry_Shevchenko [17]

Answer:

(a). The speed of electron is 1.56\times10^{7}\ m/s.

(b). The radius of electron is 4.2\ cm

Explanation:

Given that,

Length = 2.5 cm

Distance = 6.0 mm

Magnetic field = 2.1 T

Potential difference = 700 V

(a). We need to calculate the electron's speed

Using formula of speed

v=\sqrt{\dfrac{2eV}{m}}

Put the value into the formula

v=\sqrt{\dfrac{2\times1.6\times10^{-19}\times700}{9.1\times10^{-31}}}

v=15689290.81\ m/s

v=1.56\times10^{7}\ m/s

(b). We need to calculate the radius of electron

Using formula of centripetal force

\dfrac{mv^2}{r}=qvB

r=\dfrac{mv}{qB}

Where,

m = mass of electron

v = speed of electron

r = radius

q = charge of electron

B = magnetic field

Put the value into the formula

r=\dfrac{9.1\times10^{-31}\times1.56\times10^{7}}{1.6\times10^{-19}\times2.1\times10^{-3}}

r=0.042\ m

r=4.2\ cm

Hence, (a). The speed of electron is 1.56\times10^{7}\ m/s.

(b). The radius of electron is 4.2 cm

8 0
3 years ago
Atoms are known to form charges due to their ability to gain and lose electrons in reactions. As a result, atoms
galben [10]

Answer:

C. Fe: 24 electrons

Explanation:

From the analogy given, the atom with a charge of +2 is Fe having 24 electrons.

To calculate the charges on an atom;

     Number of charges = Number of protons - Number of electrons.

   O: 10 electrons: 8 protons = 8 - 10 = -2

   N: 10 electrons; 7 protons = 7 - 10 = -3

   Cl: 18 electrons; 17 protons = 17 - 18 = -1

So;

    Fe: 24 electrons and 26 protons = 26 -24  = +2

Therefore, the solution is Fe

7 0
3 years ago
Other questions:
  • Which statement about moons is true?
    5·1 answer
  • John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positiv
    6·2 answers
  • The change in momentum of an object is equal to the Question 4 options: Force acting on it times its velocity. impulse acting on
    15·1 answer
  • In diving to a depth of 308 m, an elephant seal also moves 579 m due east of his starting point. What is the magnitude of the se
    8·1 answer
  • Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from t
    13·1 answer
  • Find the magnitude of the electric field due to a charged ring of radius "a" and total charge "Q", at a point on the ring axis a
    11·1 answer
  • A capacitor is connected to an ac generator that has a frequency of 3.0 kHz and produces a rms voltage of 2.0 V. The rms current
    14·1 answer
  • Plz do all of it i will give brainlest and thanks to best answer<br> plz do it right
    12·2 answers
  • 1. What is the kinetic energy of a 94 kg basketball player running at 7.3 m/s?
    14·1 answer
  • - A straight wire, 0.20 m long, moves at a constant speed of 7.0 m/s
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!