![subject](/tpl/images/cats/fizika.png)
Physics, 23.10.2020 15:10 photagraphykid
Boxes A and B are connected to each end of a light
vertical rope (Fig. P4.49). A constant upward force F = 80.0 N is
applied to box A. Starting from rest, box B descends 12.0 m in
4.00 s. The tension in the rope connecting the two boxes is 36.0 N.
What are the masses of (a) box B, (b) box A?
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:20
Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:30
Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 20:20
The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
You know the right answer?
Boxes A and B are connected to each end of a light
vertical rope (Fig. P4.49). A constant upward fo...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 28.02.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 28.02.2021 17:50
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.02.2021 17:50
![question](/tpl/images/cats/mir.png)
World Languages, 28.02.2021 17:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 28.02.2021 17:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 28.02.2021 17:50
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.02.2021 17:50
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.02.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 28.02.2021 18:00
![question](/tpl/images/cats/geografiya.png)
Geography, 28.02.2021 18:00
![question](/tpl/images/cats/ekonomika.png)
Business, 28.02.2021 18:00
![question](/tpl/images/cats/istoriya.png)
History, 28.02.2021 18:00
![question](/tpl/images/cats/mat.png)
Mathematics, 28.02.2021 18:00