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
Lemur [1.5K]
3 years ago
9

A tire swing is released from some initial height such that the speed of the tire at the

Physics
1 answer:
Natali [406]3 years ago
6 0

The Initial height of the tire will be 0.32 m

<u>Explanation:</u>

<u>We  have the formula,</u>

h=Vf^2/2g

h=V×f×f/2g

where Vf denotes the speed of the tire at the bottom of the swing

where g denotes the acceleration

due to the gravity

h=2.5×2.5=6.25

2×9.8 =19.8

h=6.25/19.8

h=0.32

The Initial height of the tire will be 0.32 m

You might be interested in
Explain your problem of<br>Federalism<br>​
telo118 [61]

That is more of a History of English question.

6 0
3 years ago
In the physics lab, a block of mass M slides down a frictionless incline from a height of 35cm. At the bottom of the incline it
bogdanovich [222]

Solution :

Given :

M = 0.35 kg

$m=\frac{M}{2}=0.175 \ kg$

Total mechanical energy = constant

or $K.E._{top}+P.E._{top} = K.E._{bottom}+P.E._{bottom}$

But $K.E._{top} = 0$ and $P.E._{bottom} = 0$

Therefore, potential energy at the top = kinetic energy at the bottom

$\Rightarrow mgh = \frac{1}{2}mv^2$

$\Rightarrow v = \sqrt{2gh}$

      $=\sqrt{2 \times 9.8 \times 0.35}$      (h = 35 cm = 0.35 m)

      = 2.62 m/s

It is the velocity of M just before collision of 'm' at the bottom.

We know that in elastic collision velocity after collision is given by :

$v_1=\frac{m_1-m_2}{m_1+m_2}v_1+ \frac{2m_2v_2}{m_1+m_2}$

here, $m_1=M, m_2 = m, v_1 = 2.62 m/s, v_2 = 0$

∴ $v_1=\frac{0.35-0.175}{0.5250}+\frac{2 \times 0.175 \times 0}{0.525}

      $=\frac{0.175}{0.525}+0$

     = 0.33 m/s

Therefore, velocity after the collision of mass M = 0.33 m/s

 

3 0
3 years ago
In 2-3 complete sentences, explain why the needle on a compass always points in the direction of magnetic north.
Alex17521 [72]
The needle on a compass always points in the direction of magnetic north because of the magnetic poles of earth. the compass is essentially a magnet itself, so the southern pole of the compass is attracted to the northern pole of earth.
8 0
3 years ago
Read 2 more answers
(Thought question) At noon On June 21 will the shadow length of 42 degrees north latitude be shorter or longer than it is on Mar
g100num [7]

Answer: Shorter

Explanation: Shadow is formed when an light source is obstructed by an opaque object. The closer the source, shorter is the length of the shadow. In fact, when the source is exactly overhead, no shadow of the object is formed.

June 21 marks the Summer solstice which means the Sun passes directly overhead Tropic of cancer (23.5° N) at noon. March 21 marks the equinox which means sun passes directly overhead equator (0°).

Shadow length of an object at 42° Northern latitude will be shorter on June 21 because the Sun will be closer to this latitude as compared to March 21.

5 0
3 years ago
A honey bee flaps its wings 200 times per second. How much time is required for one wingbeat? Give your answer in milliseconds.
kakasveta [241]
A bees wings move so rapidly that studying them, even seeing them, has proved difficult.
The honeybees have a rapid wing beat honeybee flaps its wings 230 times every second.

Therefore, a bee flaps its wings over 200 times in about 1ms
3 0
4 years ago
Read 2 more answers
Other questions:
  • when you hold a warm bowl of soup the temperature of the palms of your hands increases this is an example of
    7·1 answer
  • This term ____ Location refers to using another location as a reference point, rather than using latitude and longitude.
    9·1 answer
  • A pendulum consisting of a 0.5 kg mass tied to a 0.3 m string is set into oscillation at the same moment that a stone is dropped
    11·1 answer
  • The kicker now kicks the ball with the same speed as in the number of 4,but at 60.0°from the horizontal or 30.0° from the vertic
    12·1 answer
  • It requires 2,500 joules to raise a certain amount of water (c = 4.186 J/g C) from 20 C to 60 C
    8·1 answer
  • During an experiment, an object is placed on a disk that rotates about an axle through its center, as shown in Figure 1. The dis
    12·1 answer
  • Pls help with science!!!!!​
    6·1 answer
  • A car accelerates at 4 m/s/s from rest. What is the car's velocity after it travels 20 m?
    13·1 answer
  • Plz help!! This is timed!!!!
    8·1 answer
  • In a related practical activity, 2 litres of a gas were heated from 35 °C to 75 °C. If the pressure was kept constant, calculate
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!