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
Crank
3 years ago
14

Express each of the following in ms -1 a) 18kmh-1​

Physics
1 answer:
vovangra [49]3 years ago
3 0
1km=1000m; 1hr=3600secs
1km/hr=1000/3600= 5/18m/sec
To convert km/hr into m/sec, multiply the number by 5 and then divide it by 18.

18kmh-1= 18•5=90
90/18=5
5ms-1
You might be interested in
The current in resistor Y is..?
Aliun [14]

(A)

Explanation:

We can see that the resistors are connected in parallel so all of them have the same voltage of 100 V. We also know that

P = VI

Since resistor Y dissipates 100 W of power, we can solve for the current as

I = \dfrac{P}{V} = \dfrac{100\:\text{W}}{100\:\text{V}} = 1.0\:\text{A}

4 0
3 years ago
How much heat is needed to raise the temperature of 8g of water by 15oC?
Murrr4er [49]
<h2>Answer: 502.08 J</h2>

Explanation:

The heat (thermal energy) needed in to raise the temperature in a process can be found using the following equation:

Q=m.C.\Delta T   (1)

Where:

Q is the heat

m=8 g is the mass of the element (<u>water</u> in this case)

C is the specific heat capacity of the material. In the case of water is C=4.184\frac{J}{g\°C}

\Delta T=15\°C is the variation in temperature  <u>(which is increased in this case)</u>

Knowing this, let's rewrite (1) with these values:

Q=(8 g)(4.184\frac{J}{g\°C})(15\°C)  (2)

Finally:

Q=502.08 J  

5 0
3 years ago
Horses can run at speeds of 16 meters per second. If a horse running at full
Korolek [52]
240 meters
Explanation: 16 x 15 because it’s 16 meters every second
6 0
3 years ago
Can we fly if we were falling for two days
nevsk [136]

...................no

4 0
3 years ago
Read 2 more answers
According to the model, which two points on Earth are experiencing winter?
quester [9]
B and D
Because these two points are below equator on sun is shining directly above equator which is experiencing summer
3 0
2 years ago
Read 2 more answers
Other questions:
  • Air "breaks down" when the electric field strength reaches 3×106n/c, causing a spark. a parallel-plate capacitor is made from tw
    11·1 answer
  • A box weighing 4.0 N is lifted 3.0 meters. How much work is done on the box?
    14·1 answer
  • A bird flew 16 km west in 5 hours , then flew 20 km east in 6 hours . What was the birds velocity?
    10·1 answer
  • A skater extends her arms, holding a 2 kg mass in each hand. She is rotating about a vertical axis at a given rate. She brings h
    13·1 answer
  • suppose that a block is pulled 16 meters across a floor. what amount of work is done if the force used to drag the block is 22n
    7·1 answer
  • An atom is chemically stable when it’s outer_____ is completely filled with _____.
    7·1 answer
  • Which option best describes electromagnetic waves that have enough energy to change atoms or molecules into ions?
    6·2 answers
  • Please Help!! This is very tough for me. Try you best to answer these problems!!Pleaseee
    5·2 answers
  • Evaluate the expression a+b when a=23 and b=45 . Write in simplest form
    13·1 answer
  • A student holding a 324Hz tuning fork approaches a wall at a speed of 6ms^(-1). The speed of sound in air is 336ms^(-1). What fr
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!