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
Kay [80]
3 years ago
5

Pls help me with this fast. I will mark brainiest

Physics
1 answer:
denis23 [38]3 years ago
5 0

Answer:

a) 70, 95

b) 95-70= 25cc

c) density= mass/volume

102/25

=4.08g/cc

You might be interested in
Usain Bolt is the fastest human at 12.4 m/s. If Usain Bolt had a mass of 94kg, what was Usain Bolt’s KE?
Fittoniya [83]

Answer:The fastest recorded human footspeed was recorded between 60 and 80m in Bolt's world record 9.58-second 100m final in Berlin in 2009. Bolt was clocked at 44.72km/h, which is 27.8mph. The Jamaican covered the distance between 60-80m in a time of just 1.61 seconds

Explanation:

pls brainlist too

3 0
3 years ago
Please help!
Marina86 [1]

Answer:

I think It Should be Star B

Explanation:

6 0
3 years ago
Read 2 more answers
Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. Which of the following best
Marizza181 [45]

As we know that in cellular phone all the signals are transmitted by antenna in the form of electromagnetic waves

All these electromagnetic waves are transmitted through the phones and then received as a signal to the receiver of another phone

These signals are then processed and converted into sound which is produced by the phone

So here correct answer will be

<em>C. The cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound.</em>

7 0
3 years ago
Read 2 more answers
Vector A has a magnitude of 8.0 m and points east, vector B has a magnitude of 6.0 m and points north and vector C has a magnitu
sineoko [7]

Answer:

The answer is E) 6.7m at an angle 63° north of east

Explanation:

We begin by writing out our given vectors A,B and C in their respective rectangular Cartesian coordinate form. which are given as A=8i, B=6j and C= -5j (negative because it points towards west which is towards the left which is taken as the negative direction).Now we simply add all three to obtain our final vector given by,

V=A+B+C\\V=8i + 6j - 5i\\V=3i + 6j

In the last step we just added the like components. Now we will have to calculate the magnitude and angle of V(with respect of the east direction), which is given by,

|V| = \sqrt{3^2 + 6^2} =6.7m\\\\\alpha =tan^{-1} (6/3)=tan^{-1} (2) = 63.4

the angle alpha is always calculated with respect to the horizontal positive axis, and since both components of the vector are positive the vector lies in the first quadrant. Hence the 63° angle north of east is justified. The term north of east means the angle formed in moving from east towards the north that is from the positive horizontal axis to the positive vertical axis.

8 0
4 years ago
A deer is running from a mountain lion when it encounters a fence that is 1.50 m high. Seeing the fence, the deer jumps, leaving
Novosadov [1.4K]

Answer:

Explanation:

Given

Initial Velocity (u)=13 m/s

angle=29^{\circ}

distance between fence and deer=2.5 m

We consider deer jump similar to projectile motion

equation of trajectory

y=xtan\theta -\frac{gx^2}{2u^2(cos\theta )^2}

y=2.5tan(29)-\frac{9.8\times 2.5^2}{2\times 13^2\times (cos29)^2}

y=1.385-0.2368=1.148 m

Thus deer will cross the fence with an difference in its jump and fence

1.5-1.148=0.351 m

h_{max}=\frac{u^2sin^2\theta }{2g}

h_{max}=\frac{13^2\times (sin29)^2}{2\times 9.8}

h_{max}=2.02 m

so deer rises during when it is over fence

8 0
4 years ago
Other questions:
  • 6) Kaya is riding her dirt bike eastward on a dirt road. She spots a pothole ahead. Kaya slows her car from 14.0 m/s to 5.5 m/s
    5·1 answer
  • A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with
    5·2 answers
  • What is the mean of the data set 3cm, 7cm, 7cm, 7cm, 9cm, 11cm, 12cm
    11·2 answers
  • Modern Soccer can be traced back to 1863, when football (futbol) and rugby split ways and futbol (soccer) rule would no longer a
    14·1 answer
  • The radar gun measures the frequency of the radar pulse echoing off your car. By what percentage is the measured frequency diffe
    7·1 answer
  • An automobile having a mass of 480 kg is driven into a brick wall in a safety test. The bumper behaves like a spring of constant
    11·1 answer
  • The square body of the orbital period of planet around is proportional to the cube of the planets orbital radius. this follows t
    13·2 answers
  • The length of an aluminum wire is quadrupled and the radius is doubled. By which factor does the resistance change?
    14·1 answer
  • Khẳng định nào không chính xác khi đặt doanh nghiệp gần vùng nguyên liệu:
    12·1 answer
  • what is the force that opposes the movement of two surfaces that are in contact and are sliding over each other? and it is not f
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!