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
AysviL [449]
3 years ago
7

A boy wants use his slingshot to shoot a water balloon into the air. His

Physics
1 answer:
Marrrta [24]3 years ago
5 0

Answer:

A. 70 m OS the correct one

You might be interested in
On a small planet, an astronaut uses a vertical
sleet_krkn [62]
Constant velocity means the netto force = 0, therefore F(gravity) = F(astronaut).
175N divided by 87,5kg = 2.00kg/N
6 0
3 years ago
Read 2 more answers
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons. The resulting charge b
Elena L [17]

Answer:

a) 0.167 μC/m^2

b) 1.887 * 10^4 V/m

Explanation:

Hello!

First let's find the surface charge density:

a)

Since thesatellite is metallic, the accumalted charge will be uniformly distribuited on its surface. Therefore the charge density σ will be:

σ = Q/A

Where A is the area of the satellite, which is:

A=4πr^2 = πd^2 = π(1.9m)^2

Therefore:

σ = (1.9)/(π (1.9)^2) μC/m^2 = 0.167 μC/m^2

Now let's calculate the electric field

b)

Just outside the surface of the satellite the elctric field will be:

E = σ/ε0

Where      ε0=8.85×10^−12 C/Vm

Therefore:

E = (0.167*10^-6 C/m^2) / (8.85*10^-12  C/Vm) = 0.01887 *10^6 V/m

E = 1.887 * 10^4 V/m

5 0
3 years ago
A satellite of mass m is in a circular orbit of radius R2 around a spherical planet of radius R1 made of a material with density
Amiraneli [1.4K]

Answer:

a)      K = 2/3 π G m ρ R₁³ / R₂ ,  b) U = - G m M / r

Explanation:

The law of universal gravitation is

     F = G m M / r²

Part A

Let's use Newton's second law

     F = m a

The acceleration is centripetal

     a = v² / R₂

     

      G m M / R₂² = m v² / R₂

      v² = G M / R₂

They give us the density of the planet

    ρ = M / V

    V = 4/3 π R₁³

    M =   ρ V

    M =   ρ 4/3 π R₁³

    v² = 4/3 π G  ρ R₁³ / R₂

    K = ½ m v²

    K = ½ m (4/3 π G ρ R₁³ / R₂)

    K = 2/3 π G m ρ R₁³ / R₂

Part B

Potential energy and strength are related

     F = - dU / dr

     ∫ dU = - ∫ F. dr

The force was directed towards the center and the vector r outwards therefore there is an angle of 180º between the two cos 180 = -1

    U- U₀ = G m M ∫ dr / r²

    U - U₀ = G m M (- r⁻¹)

We evaluate for

    U - U₀ = -G m M (1 / r_{f} -  1 /r_{i})

They indicate that for ri = ∞     U₀ = 0

    U = - G m M / r

6 0
3 years ago
Will a substance that contains an o-h group dissolve in water?
Stella [2.4K]
Usually, it increases the solubility in water.
4 0
3 years ago
Which of the following statements best describes energy conservation in heat engines?
Lorico [155]
B is the correct answer
5 0
2 years ago
Other questions:
  • Even though the Sun has a greater mass than Earth, the Moon orbits Earth because it's ___________________ to Earth than to the S
    15·2 answers
  • The distance from one compression in a sound wave to the next compression is defined as the __________.
    10·1 answer
  • When a liquid has vapor pressure equal to atmospheric pressure, it?
    12·2 answers
  • a body is projected vertically upward with velocity u returns to starting points in 4 sec find the value of u if g=10m/s
    6·1 answer
  • The car's motion can be divided into three different stages: its motion before the driver realizes he's late, its motion after t
    12·1 answer
  • Determine the power that needs to besupplied by the fanifthe desired velocity is 0.05 m3/s and the cross-sectional area is 20 cm
    6·1 answer
  • Answer for a thanks
    7·1 answer
  • When a potential difference of 10 V is placed across a certain solid cylindrical resistor, the current through it is 2 A. If the
    12·1 answer
  • Please help!! For a science quiz
    7·1 answer
  • A car has a mass of 1000 kg. What is the acceleration produced by a force of 2000 N?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!