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
algol [13]
2 years ago
14

Has anyone done this???i need the last questions for 1 and 2

Physics
1 answer:
Helen [10]2 years ago
8 0

Answer:

no i haven't done it

Explanation:

clean yo computer tho

You might be interested in
A car completes a journey in 2 hours. Its average speed over this journey was 45mph. Calculate the distance travelled by the car
HACTEHA [7]

Distance = average speed ×time

Distance = 45 × 2

Distance = 90 miles

8 0
3 years ago
What is common between the quantities of area, density and speed?​
Rainbow [258]

Answer:

They are all s

calar quantities

5 0
2 years ago
Read 2 more answers
An object of mass 2.0 kg is attached to the top of a vertical spring that is anchored to the floor. The unstressed length of the
poizon [28]

Answer:

The value is A  =  0.014 \  m

Explanation:

From the question we are told that

    The mass of the object is  m  =  2.0 \  kg

    The unstressed length of the string is  l  =  0.08 \  m

    The length of the spring when it is  at equilibrium is  l_e = 5.9 \  cm  =  0.059 \  m

      The initial speed (maximum speed)of the spring when given a downward blow v  =  0.30 \  m/s

Generally the maximum speed  of the spring  is mathematically represented as

           u =  A *  w

Here A is maximum height above the floor (i.e the maximum amplitude)

            and w is the angular frequency which is mathematically represented as

       w = \sqrt{\frac{k}{m} }

So

        u =  A *   \sqrt{\frac{k}{m} }

=>      A  =  u *   \sqrt{\frac{m}{k} }

Gnerally the length of the compression(Here an assumption that the spring was compressed to the ground by the hammer is made) by the hammer is mathematically represented as

           b  =  l -l_e

=>         b  = 0.08 - 0.05 9

=>         b  = 0.021 \  m

Generally at equilibrium position the net force acting on the spring is  

            k *  b  -  mg  =  0

=>         k *  0.021   -   2 * 9.8  =  0

=>        k =  933 \  N/m

So

            A  =  0.30  *   \sqrt{\frac{2}{933} }

=>          A  =  0.014 \  m

8 0
3 years ago
Do thermohaline currents flow vertically or horizontally<br><br> A. Vertically<br> B. Horizontally
Shkiper50 [21]
B





M


‘’’’



Vujkbukbuvuvubkkbbiu
7 0
3 years ago
A force of 55N accelerates a 7.5kg wagon at 5.3 m/s^2 along a road. How large is the frictional force?
Varvara68 [4.7K]

Answer:

<h2>15.25 N</h2>

Explanation:

       A force of 55\text{ }N is acting on a wagon along the road. The wagon weights 7.5\text{ }kg. Acceleration of the wagon is given as 5.3\text{ }\frac{m}{s^{2}}.

       Consider the block as the system, the forces acting are Frictional force, Gravitational force, Normal reaction and External force applied by us.

       Gravitational Force and Normal Reaction cancel out each other.

       Net External Force = Mass of system/wagon \times Acceleration of wagon

       F_{ext}-F_{friction}=(7.5\text{ }kg)\times(5.3\text{ }\frac{m}{s^{2}})=39.75\text{ }N\\55\text{ }N-F_{friction}=39.75\text{ }N\\F_{friction}=15.25\text{ }N

F_{friction} has a negative sign because it opposes the motion of the wagon.

∴ Frictional Force = 15.25 N

4 0
3 years ago
Other questions:
  • The purple arrow shows speed and direction of the ball. This arrow is called what?
    15·2 answers
  • A satellite is in a circular orbit about the earth (ME = 5.98 x 10^24 kg). The period of the satellite is 1.97 x 10^4 s. What is
    6·1 answer
  • If a ray of light is incident on plane mirror at an angle of 300 its angle of reflection is.​
    9·1 answer
  • Please help. ill make you BRAINLIEST
    9·1 answer
  • Select True or False for the follwing statements about electric field lines.
    5·1 answer
  • Wires diameters are usually specified by a number called the gauge. The smaller gauge wire has a larger diameter. For example, a
    11·1 answer
  • pressure A vertical piston cylinder device contains a gas at an unknown pressure. If the outside pressure is 100 kPa, determine
    5·1 answer
  • 27. A 0.150 kg baseball is thrown upward with an initial
    7·1 answer
  • Why is it important for scientists to replicate each other’s experiments?
    14·2 answers
  • A 0.20 mass on a horizontal spring is pulled back a certain distance and released. The maximum speed of the mass is measured to
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!