Physics, 04.10.2021 22:10 lovebunny33921
Một vật được ném từ đỉnh tòa nhà cao 20 m so với mặt đất với vận tốc ban đầu 12 m / s hợp với phương ngang một góc O = 30 ° . Tính khoảng cách từ vị trí vật chạm đất đến chân tòa nhà ( gốc O ) . Lưu ý Sử dụng hệ trục Oxy được chọn như hình 2. Bỏ qua lực cản không khí
Answers: 1
Physics, 22.06.2019 01:00
Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be
Answers: 1
Physics, 22.06.2019 05:50
Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.
Answers: 2
Physics, 22.06.2019 11:00
The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.
Answers: 3
Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Một vật được ném từ đỉnh tòa nhà cao 20 m so với mặt đất với vận tốc ban đầu 12 m / s hợp với phương...
Mathematics, 08.04.2020 05:24
Mathematics, 08.04.2020 05:24
Mathematics, 08.04.2020 05:24
Physics, 08.04.2020 05:24
Social Studies, 08.04.2020 05:24
Computers and Technology, 08.04.2020 05:24
Mathematics, 08.04.2020 05:24
Chemistry, 08.04.2020 05:24
Mathematics, 08.04.2020 05:24
Chemistry, 08.04.2020 05:24
Arts, 08.04.2020 05:24
English, 08.04.2020 05:25