![subject](/tpl/images/cats/fizika.png)
Physics, 02.11.2021 04:00 kelebsessoms89
A 0.25 kg rock is projected from the edge of the top of a building with an initial velocity of 13.3 m/s at an angle 60◦ above the horizontal. Due to gravity, the rock strikes the ground at a horizontal distance of 20.3 m from the base of the building. How tall is the building? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2. Answer in units of m
![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)
Physics, 22.06.2019 00:00
Name three different units of energy used to measure heat and describe what type of situations each is usually used.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 12:00
Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?
Answers: 1
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
You know the right answer?
A 0.25 kg rock is projected from the edge of the top of a building with an initial velocity of 13.3...
Questions
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 00:54
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 00:54
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 14.03.2020 00:55