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
12345 [234]
3 years ago
13

Two trains leave a station at the same time, Train A travels at a constant speed of 16 m/s. Train B starts at 8.0 m/s but accele

rates constantly at 1.0 m/s squared. After 10.0 seconds, which train has the greater speed?
Physics
1 answer:
tekilochka [14]3 years ago
8 0

Train B is gonna have a greater speed after 10 seconds


You might be interested in
Pulling up on a rope, you lift a 4.25 kg bucket of water from a well with an acceleration of 1.80 m/s2 . What is the tension in
sattari [20]

Answer:

49.3 N

Explanation:

Given that Pulling up on a rope, you lift a 4.25 kg bucket of water from a well with an acceleration of 1.80 m/s2 . What is the tension in the rope?

The weight of the bucket of water = mg.

Weight = 4.25 × 9.8

Weight = 41.65 N

The tension and the weight will be opposite in direction.

Total force = ma

T - mg = ma

Make tension T the subject of formula

T = ma + mg

T = m ( a + g )

Substitutes all the parameters into the formula

T = 4.25 ( 1.8 + 9.8 )

T = 4.25 ( 11.6 )

T = 49.3 N

Therefore, the tension in the rope is 49.3 N approximately.

8 0
3 years ago
A hollow Spherical conductor of radius 12 cm is
Ket [755]

Answer:

Explanation:

Radius of the charged sphere (R)=12cm

Charge (q)=6∗10^−6C

Electric field intensity (E)=?

i) On the surface

E=\frac{1}{4\pix_{e0}  } \frac{q}{R^2} =9*10^{9} *\frac{6*10^{-6} }{0.12^-2}  =3.75*10^6 N/C

ii) Inside the sphere,

E=0;  Because charge enclosed by Gaussian surface is zero.

iii) Outside the sphere at distance 15cm

i.e. r=12+15=27cm=0.27m

E=\frac{1}{4\pi _{e} }_{0} \frac{q}{r^{2} } =9*10^9*\frac{6 \a* *10^6}{(0.27)^2} =7.41*10^5 N/C

5 0
3 years ago
If a girl is standing in front of a smooth surface from which a sound is reflected the girl may hear
Harlamova29_29 [7]
If the girl is also near the source of the sound, two alike sets of sounds will be heard.
7 0
3 years ago
Read 2 more answers
What is a acceleration of a bicycle that goes from 3m/s to 1 m/s in 2 seconds?
Tema [17]

Answer:

1m/s²

Explanation:

a = (v2 - v1) / t

= (3 - 1) / 2

= 1m/s²

6 0
2 years ago
A uniform ladder is 10 m long and weighs 400 n. it rests with its upper end against a frictionless vertical wall. its lower end
Nikolay [14]
<h3><u>Answer;</u></h3>

200 N

<h3><u>Solution;</u></h3>

Given ;

Weight = 400 N

Length of the ladder = 10 m

Using the equation;

Torque = d x F, where F is the perpendicular force and d is the distance

Calculating torque about the lower end,

Tweight = Twall

400N(5cos30) = F (10sin30)

 F = 200 N

Therefore, the magnitude of force exerted on the peg by the ladder is 200 N

5 0
4 years ago
Other questions:
  • you have two pendulums with cords that are exactly the same length. one is on earth (with an acceleration due to gravity of 9.81
    6·1 answer
  • An adult with a BMI of 25 to 30 is considered
    9·2 answers
  • A 900 kg steel beam is supported by the two ropes shown in (Figure 1) . Calculate the tension in the rope.
    15·1 answer
  • What is the value of the angle of refraction of light from a crown glass slab when the angle of incidence is 50°? The slab has a
    13·1 answer
  • 1 Which photograph of Lange's is a portrait orientation? Which photograph of Lange's is a landscape orientation? Be sure to supp
    13·1 answer
  • ) 37.36 .. Electrons are accelerated through a potential difference of 750 kV, so that their kinetic energy is 7.50 * 105 eV. (a
    12·2 answers
  • If a wave has a speed of 362 m/s and a period of 4.17 ms, its wavelength is closest to
    15·1 answer
  • What electric force would a stationary 3.8 C charge experience if it were far away from any other charges
    5·1 answer
  • amelia goes for mountering with some selected friend of her batch .Intially she is scared of it .Her trainer John tells her that
    14·1 answer
  • 8th grade science !
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!