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
N76 [4]
3 years ago
11

If a rock were dropped from a building it would hit the ground with a certain kinetic energy and velocity. If it fell from a roo

f 25 times as tall, how would its speed of impact compare? You must show work to receive credit.
Physics
1 answer:
STALIN [3.7K]3 years ago
5 0

Answer:

no

Explanation:

because if you test it they hit the ground at the same time.

You might be interested in
What is the spring constant for a supermarket scale that stretches 0.01 m when a force of 4 N is applied
bija089 [108]

Answer:

400N/m

Explanation:

K = F/x

= 4/0.01

= 400 N/m

5 0
3 years ago
9. A 12 v battery is connected to four 5 ohm light bulbs. What is the equivalent
vlabodo [156]
20 ohms 5 ohms
12volts
7 0
2 years ago
A circular saw blade with radius 0.175 m starts from rest and turns in a vertical plane with a constant angular acceleration of
adelina 88 [10]

Answer:

x = 11.23  m

Explanation:

For this interesting exercise, we must use angular kinematics, linear kinematics and the relationship between angular and linear quantities.

Let's reduce to SI system units

    θ = 155 rev (2pi rad / rev) = 310π rad

    α = 2.00rev / s2 (2pi rad / 1 rev) = 4π rad / s²

Let's look for the angular velocity at the time the piece is released, with starting from rest the initial angular velocity is zero (wo = 0)

    w² = w₀² + 2 α θ  

    w =√ 2 α θ

    w = √(2 4pi 310pi)

    w = 156.45  rad / s

The relationship between angular and linear velocity

    v = w r

    v = 156.45  0.175

    v = 27.38 m / s

In this part we have the linear speed and the height that it travels to reach the floor, so with the projectile launch equations we can find the time it takes to arrive

    y = v_{oy} t - ½ g t²

As it leaves the highest point its speed is horizontal

   y = 0 - ½ g t²

   t = √ (-2y / g)

   t = √ (-2 (-0.820) /9.8)

   t = 0.41 s

With this time we calculate the horizontal distance, because the constant horizontal speed

   x = vox t

   x = 27.38 0.41

   x = 11.23  m

5 0
3 years ago
Select the correct answer. An object has one force acting on it. It is a 33-newton force pointing downward. To create a net forc
kiruha [24]

Answer:

33 Newton upwards to get a net force of zero.

4 0
2 years ago
Read 2 more answers
Two particles, each of charge Q, are fixed at opposite corners of a square that lies in the plane of the page. A positive test c
amid [387]

Answer:

The magnitude of the net force is √2F.

Explanation:

Since the two particles have the same charge Q, they exert the same force on the test charge; both attractive or repulsive. So, the angle between the two forces is 90° in any case. Now, as we know the magnitude of these forces and that they form a 90° angle, we can use the Pythagorean Theorem to calculate the magnitude of the resultant net force:

F_N=\sqrt{F^{2}+F^{2}}\\\\F_N=\sqrt{2F^{2}}\\\\F_N=\sqrt{2}F

Then, it means that the net force acting on the test charge has a magnitude of √2F.

7 0
3 years ago
Other questions:
  • The car salesman tells you that the car can go from a stopped position to 60 miles per hour in 6 seconds. He is giving you the c
    9·2 answers
  • How does a sound wave form
    9·1 answer
  • If you double the mass of an object what is the result on the acceleration
    8·2 answers
  • How can you write a sentence using gland and hormone in the same sentence?
    12·1 answer
  • A record turntable is rotating at 33 rev/min. A watermelon seed is on the turntable 4.0 cm from the axis of rotation. (a) Calcul
    9·1 answer
  • How are loudness and intensity related to the amplitude and energy of a sound wave? What is the unit of intensity?
    6·1 answer
  • This was due yesterday...
    7·2 answers
  • A 20×10⁹charge is moved between two points A andB that are 30mm apart and have an electric potential difference of 600v between
    9·1 answer
  • https://brainly.com/question/add?entry=1642&task_content=Tania+was+asked+to+describe+the+relashio+of+electrity+and+magnetism
    12·1 answer
  • Mental health can be improved by (5 points)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!