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
ivolga24 [154]
3 years ago
9

how height does a 2.5 Kg object rises when 255J of work done against gravity A 637.5 B 20.5 C 15m D 10.2 m​

Physics
2 answers:
xz_007 [3.2K]3 years ago
8 0

Answer:

D

Explanation:

Work = Mass * Gravity(9.8) * Height

height=work/(mass*9.8)

height=255/(2.5*9.8)=10.4m

balu736 [363]3 years ago
7 0

Answer:

D 10.2

Explanation:

255 ÷ 2.5= 10.2 or D

You might be interested in
You are viewing a read out of an oscilloscope that shows you when different voltages in a circuit maximize. If the period of the
Aleksandr-060686 [28]

Answer:

The time is  t = 0.02 \ s  

Explanation:

From the question we are told that

  The period of the circuit is  T  =  0.04

Generally voltage maximization of the capacitor occurs during the voltage minimization of the inductor and vise versa

So the time between the voltage maximization of the capacitor and that of the inductor is mathematically represented as

           t = \frac{T}{2}

=>        t = \frac{0.04}{2}

=>        t = 0.02 \ s  

7 0
2 years ago
What two simple machines are found in a bike?
omeli [17]
I think it's a pulley and a lever.
3 0
3 years ago
In a playground, there is a small merry-go-round of radius 1.20 m and mass 160 kg. Its radius of gyration is 91.0 cm. (Radius of
aksik [14]

Answer:

a) 145.6kgm^2

b) 158.4kg-m^2/s

c) 0.76rads/s

Explanation:

Complete qestion: a) the rotational inertia of the merry-go-round about its axis of rotation 

(b) the magnitude of the angular momentum of the child, while running, about the axis of rotation of the merry-go-round and

(c) the angular speed of the merry-go-round and child after the child has jumped on.

a) From I = MK^2

I = (160Kg)(0.91m)^2

I = 145.6kgm^2

b) The magnitude of the angular momentum is given by:

L= r × p The raduis and momentum are perpendicular.

L = r × mc

L = (1.20m)(44.0kg)(3.0m/s)

L = 158.4kg-m^2/s

c) The total moment of inertia comprises of the merry- go - round and the child. the angular speed is given by:

L = Iw

158.4kgm^2/s = [145kgm^2 + ( 44.0kg)(1.20)^2]

w = 158.6/208.96

w = 0.76rad/s

7 0
2 years ago
The normal force which the path exerts on a particle is always perpendicular to the _________________ tangent to the path. trans
Marianna [84]
Tangent to the pathh.
7 0
3 years ago
What to do if the patient stops breaching during Fainting ?​
oksian1 [2.3K]

Answer:

unloosen the tight attire parts,open all windows for better air circulation,if he/she does not react place your hands on the chest and press gently three times per interval while giving them air through the mouth CPR then when they react place them to lie horizontal face sideways

4 0
3 years ago
Read 2 more answers
Other questions:
  • Please help! I have another part to this too.
    8·1 answer
  • my question is about a cupcake recipe and there asking me about a 7-digit code with no spaces and to me that question was pretty
    8·1 answer
  • A velocity selector is built with a magnetic field of magnitude 5.2 T and an electric field of strength 4.6 × 10 ^ 4 N/C. The di
    10·1 answer
  • A wave with a fequency of 12 hz has a wavelength of 1.5 meter. at what speed will this wave travel?
    10·1 answer
  • What is the thermal energy of an object
    9·2 answers
  • In a closed system that has 45 J of mechanical energy, the gravitational
    9·2 answers
  • Suppose you're using an operant conditioning approach to teach someone how to use a bow and arrow. You begin by teaching your st
    14·1 answer
  • Which of the following can carry light waves but not sound waves
    14·2 answers
  • The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s2 is?
    7·1 answer
  • Can anyone help me with this? <br>the question : find the value of the resistors​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!