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
yaroslaw [1]
2 years ago
9

A hot air balloon moves vertically upwards at constant velocity of 1.5 m s−1 . A person standing on the ground below throws a ba

ll towards the balloon with vertical velocity of 10 m s−1. The ball does not reach the balloon.
Calculate the time at which the ball comes closest to the balloon after it is thrown.

(You may ignore air resistance. Take the acceleration due to gravity to be 10 m s−2.)
Physics
1 answer:
serg [7]2 years ago
8 0

Answer:

idk srry

Explanation:

i wish I could help you out

You might be interested in
Which of the following electromagnetic waves is not used for communication?
lutik1710 [3]
Microwaves and radio waves are employed in radio and satellite communications while infrared waves are used in remote controls and infrared features of new phones and other electrons. However, gamma rays have far too much energy and cause damage to the body. They are not used in communication.
The answer is A.
8 0
2 years ago
What is the similarity between relative dating and radioactive dating?
tankabanditka [31]
They both provide a range of years of an object. I think. They’re just 2 different ways to tell the age of fossils or rocks
4 0
3 years ago
The amplitude of the voltage across an inductor can be greater than the amplitude of the generator EMF in an AC RLC circuit. Con
Degger [83]

Answer:

VL=2107.6v

Explanation:

at resonance xc=xL

1/wc = wL

z=R

because sqr(R^2+(xL-xc))

^

(xL=xc)

V/R=I

90/28.9=3.1142A

w=1/sqr(1.31×(2.86×10^-6))=516.63

xL= wL

xL= 516.63×1.31=676.785

VL=3.1142×676.785

VL=2107.6v

4 0
3 years ago
Suppose that a uniform electric field exists in a certain region of space. Now consider a mathematical plane surface of area A.
____ [38]

Answer: The normal of the plane must be parallel to the electric field vector.

Explanation:

the normal to the surface is defined as a versor that is perpendicular to the plane.

Now, if the angle between this normal and the line of the field is θ, we have that the flux can be written as:

Φ = E*A*cos(θ)

Where E is the field, A is the area and θ is the angle already defined.

Now, this maximizes when θ = 0.

This means that the normal of the surface must be parallel to the electric field

7 0
2 years ago
What happens in a convection current?
V125BC [204]

Answer:

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

Explanation:

5 0
3 years ago
Other questions:
  • A toaster uses 6700 joules of energy in 45 seconds to toast to a piece of bread what is power of the oven
    6·1 answer
  • 1. A signal source has an open-circuit voltage of 1V, and a short-circuit current of10mA. What is the source resistance
    12·1 answer
  • What color dose red cabbage juice turn when it is mixed with lemon juice
    6·1 answer
  • A block of wood 3 cm on each side has a mass of 27 <br> g. what is the density of the block
    8·1 answer
  • If a ball goes at 20 miles per hour what's the velocity
    14·1 answer
  • Car A is 16 kilometers to the west of car B. At noon, Car A begins driving east at a constant speed 4 kilometers/hour, and car B
    13·1 answer
  • A vertical wire carries a current straight down. To the east of this wire, the magnetic field points: A) toward the east. B) tow
    13·2 answers
  • In pairs figure-skating competition, a 65-kg man and his 45-kg female partner stand facing each other both at rest on the ice. I
    13·1 answer
  • A yellow train of mass 100 kg is moving at 8 m/s toward an orange train of mass 200 kg traveling in the opposite direction on th
    14·1 answer
  • You push a 15N cat in a box horizontally across the floor for 5m. What is the work done on the cat? W=Fx
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!