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
alex41 [277]
3 years ago
7

PLEASE HELP PLS ITS DUE IN 10 MINUTES!!

Physics
1 answer:
timurjin [86]3 years ago
4 0

Answer:

I AM SO SORRY

but here is the answer

Explanation:

20 j

You might be interested in
The part of the computer that provides access to the internet is
Allisa [31]
The Modem


or physically connecting on the computer the data port is for a cable to connect
5 0
3 years ago
An iron railroad rail is 800 ft long when the temperature is 31°C. What is its length (in ft) when the temperature is −17°C?
natta225 [31]

Answer:

799.54 ft

Explanation:

Linear thermal expansion is:

ΔL = α L₀ ΔT

where ΔL is the change in length,

α is the linear thermal expansion coefficient,

L₀ is the original length,

and ΔT is the change in temperature.

Given:

α = 1.2×10⁻⁵ / °C

L₀ = 800 ft

ΔT = -17°C − 31°C = -48°C

Find: ΔL

ΔL = (1.2×10⁻⁵ / °C) (800 ft) (-48°C)

ΔL = -0.4608

Rounded to two significant figures, the change in length is -0.46 ft.

Therefore, the final length is approximately 800 ft − 0.46 ft = 799.54 ft.

7 0
3 years ago
A body of mass 2 kg at O has an initial velocity of 3m/s along OE and it is subjected to a force of 4N perpendicular to OE the d
timofeeve [1]
Perpendicular acceleration:
F = ma
a = 4 / 2 = 2 m/s²

Perpendicular distance:

s = ut + 1/2 at²
s = 0 x 4 + 1/2 x 2 x 4²
s = 16 m

Horizontal distance:
s = ut
= 3 x 4
= 12 m

Total distance = √(12² + 16²)
= 20 m.
3 0
3 years ago
You run 100 meters in 50 seconds. Calculate your speed, label with m/s
NemiM [27]

Answer:

2 m/s

Explanation:

speed = distance/time

s = 100/50 = 2

4 0
3 years ago
You lift a 50 N object 2 meters off the ground what work did you do on the object
mixer [17]
Work equals force × displacement (distance between initial point and end point is displacement)
if u follow this it becomes
work = 50 × 2 which is equal to 100

comment if u have more questions
4 0
3 years ago
Other questions:
  • Graphs are____of relationships
    7·2 answers
  • Why do we believe that most of the mass of the milky way is in the form of dark matter?
    6·1 answer
  • A 21.0 kg shopping cart is moving with a velocity of 4.0 m / s. It strikes a 7.0 kg box that is initially at rest. They stick to
    10·1 answer
  • Physics 1 Course. please help. ​
    8·1 answer
  • A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equa
    9·1 answer
  • A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.12 kg resting on a horizontal surface. The coefficie
    13·1 answer
  • Same object differs in water than in air?
    8·1 answer
  • In order to move a bag of dog food across a room that measures 8 meters in length, you apply 10 Newtons of force. How much work
    7·1 answer
  • A belt of negligible mass passes between cylinders A and B and is pulled to the right with a force P. Cylinders A and B weigh, r
    15·1 answer
  • A load of 50N attached to a spring hanging vertically stretches the spring is 5cm . The spring is now placed horizontally on a t
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!