What does basketballs have inside of it

Answers

Answer 1

Answer: Hi there!

Great question!

Basketballs have air inside them. A special pump is used to insert the air. That's why you can lift the basketballs off the ground easily. If it was a solid, though, you'd hardly be able to lift the ball up! Basketballs can float, too, because anything with air inside can float. If it were solid, it would sink in the water easily.

Hope this helps! :D

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Freshwater leeches attach to fish and suck blood from the fish to extend periods of time. This results in sores on the fish that often become infected . This relationship is best described as?
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You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30 degrees c to 36 degrees c. what is the velocity if the sound wave at this new temperature?

Answers

To calculate the velocity of the sound wave, we use this formula:
V = 331 + [0.6*T],
Where V is the velocity and T represents temperature.
When the temperature is 36 degree Celsius, we have
V = 331 + [0.6 * 36]
V = 331 + 21.6 = 352.6
Therefore, V = 352.6 m/s.

352.6 m/s just took the test

Describe how the resistance of the filament lamp changes as the current through it increases.

Answers

This heats up when an electric current passes through it, and produces light as a result. The resistance of a lamp increases as the temperature of its filament increases. The current flowing through a filament lamp is not directly proportional to the voltage across it.

Listen →A 6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 30 seconds. What is the speed
of the cart at the end of this 3.0 second interval?

Answers

Answer:

V = 20.5 m/s

Explanation:

Given,

The mass of the cart, m = 6 Kg

The initial speed of the cart, u = 4 m/s

The acceleration of the cart, a = 0.5 m/s²

The time interval of the cart, t = 30 s

The final velocity of the cart is given by the first equation of motion

v = u + at

= 4 + (0.5 x 30)

= 19 m/s

Hence the final velocity of cart at 30 seconds is, v = 19 m/s

The speed of the cart at the end of 3 seconds

V = 19 + (0.5 x 3)

= 20.5 m/s

Hence, the final velocity of the cart at the end of this 3.0 second interval is, V = 20.5 m/s

a stream flows with a speed of 3.0 meters per second relative to the shore. A kayaker paddles Downstream with the speed of 1.5 meters per second relative to the stream. What is the kayaker speed relative to the shore

Answers

Since the kayakers speed is 1.5 meters per second relative to the stream, the kayakers velocity in meters per second relative to the shore should be its speed relative to the stream plus the stream's velocity relative to the shore. This is 1.5m/s + 3.0m/s which is equal to 4.5 meters per second (m/s).

Final answer:

The kayaker's speed relative to the shore is calculated by adding the stream's speed (3.0 m/s) and the kayaker's speed relative to the stream (1.5 m/s), which results in 4.5 m/s.

Explanation:

In this scenario, the kayaker's total velocity, or speed relative to the shore, is the vector sum of the kayak's velocity relative to the water and the water's velocity relative to the shore. This principle reflects how velocities combine in Newtonian mechanics. Given that the stream's velocity is 3.0 meters per second and the kayaker's velocity relative to the stream is 1.5 meters per second, we add these velocities together to get the kayaker's velocity relative to the shore.

Therefore, the kayaker's speed relative to the shore is 4.5 meters per second. This sum is based on the principle that when moving downstream, the stream's velocity (its speed in a particular direction) augments the velocity of the kayak.

Learn more about Relative Velocity here:

brainly.com/question/34025828

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When traveling at top speed, a roller coaster train with a mass of12,000 kg has a velocity of 30 m/s. The kinetic energy of the train at top speed is

Answers

Answer:

The kinetic energy of the train at top speed is 5,400,000 J

Explanation:

Kinetic Energy

It's the capacity that an object has to do work in virtue of its velocity. If we use UI units for the mass and velocity, the kinetic energy is expressed in Joules, or Nw.m or $Kg.m^2/sec^2$ . It can be computed with the formula