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
Gelneren [198K]
3 years ago
15

A rock exerts 5000 Pa of pressure on the ground. If the rock weighs 250 N, how much area is in contact with the ground?

Physics
2 answers:
ololo11 [35]3 years ago
4 0

P = F/S - S = F/P = 250/5000= 0.05 m2

SOVA2 [1]3 years ago
3 0

Answer:

Area=0.05 m^{2}

Explanation:

Given pressure=5000 Pa

and weight=250 N

Using equation

Pressure=Force/Area

So,Area=Force/pressure

Area=250/5000

Area=0.05 m^{2}

You might be interested in
Can you be fluid overload and dehydrated at the same time
STALIN [3.7K]
.................yes...................
5 0
3 years ago
Which description correctly summarizes how an electric motor causes an axle to turn?
alexira [117]

Answer:

B on edge

Explanation:

the piles of the magnetic field generated around the armature are attracted to the opposite poles of the permanent magnent. As the opposite poles align, the commutator reverses the current direction so like poles are aligned and the armature continues to spin

6 0
3 years ago
Please help me:(
Lelechka [254]

Answer:B

Explanation:

I’m doing the same thing you are!

3 0
3 years ago
You're driving down the highway late one night at 20 m/s when a deer steps onto the road 44 m in front of you. Your reaction tim
never [62]

Answer:

14.0 m

25.1 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

Distance traveled in the reaction time

Distance = Speed × Time

\text{Distance}=20\times 0.5=10\ m

v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{0^2-20^2}{2\times -10}\\\Rightarrow s=20\ m

Distance in which the car will stop is 10+20 = 30.0 m

So, the car will not hit the deer

Distance between the car and deer is 44-30 = 14.0 m

\text{Distance}=u\times 0.5=0.5u\ m

v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow u^2=v^2-2as\\\Rightarrow u^2=0^2-2\times -10\times (44-0.5u)\\\Rightarrow u^2=20(44-0.5u)\\\Rightarrow u^2=880-10u\\\Rightarrow u^2+10u-880=0

u=\frac{-10+\sqrt{10^2-4\cdot \:1\left(-880\right)}}{2\cdot \:1}, u=\frac{-10-\sqrt{10^2-4\cdot \:1\left(-880\right)}}{2\cdot \:1}\\\Rightarrow u=25.08, -35.08\ m/s

Maximum speed of the car by which it will not hit the deer is 25.1 m/s

5 0
3 years ago
Read 2 more answers
4. A motorist travels 406 km during a 9.0 hr period. What was the average speed in km/hr and m/s?
user100 [1]

Answer:

45.11 kmph and 12.530 m/s

Explanation:

Average speed = Total distance travelled / Total time taken

406/9 gives the answer in kilometers

And we convert it to m/s by multiplying it with 1000/3600

6 0
3 years ago
Other questions:
  • A boy is pulling a load of 150N with a string inclined at an angle 30 to the horizontal if the tension of string is 105N the for
    6·1 answer
  • If a freely falling rock were equipped with a speedometer, by how much would itd speed readings increase with each second if it
    6·1 answer
  • The distance between two cities is 144km,it takes me 3hours to travel between these cities.What speed did I travel at?​
    15·1 answer
  • The mass of an electron is 9.11×10−31 kg. If the de broglie wavelength for an electron in a hydrogen atom is 3.31×10−10 m
    14·1 answer
  • a wheelchair ramp for a business cannot be steeper than 5° a similar ramp for a home can be 10° what is the difference in degree
    7·1 answer
  • The volume of a gas can be converted to moles by
    12·1 answer
  • Alan travels 100 km in 5hrs. Find his average speed in km/h​
    12·2 answers
  • A frog jumps for 4.0 seconds at a maximum horizontal distance of 0.8m. what is its velocity along the road?
    6·1 answer
  • HELP PLEASE. WILL GIVE BRAINLIEST!!!
    12·2 answers
  • How many degrees are there between the direction of motion and the force of
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!