a block of mas m=5.2 kg slides head on into a spring of spring constant ke-380 Nm. When the block stops, it has compress... 查看全部
An airplane onlanding 10° 170 m/s 3. (10 points) Kinematics. (15 points) An airplane on landing approach is in a shallow... 查看全部
A wire carries an electric current directed into the page. Then the direction of the magnetic field at point P located a... 查看全部
1. DETAILS MY NOTES This question has several parts that must be completed sequentially. If you skip a part of the quest... 查看全部
A train at a constant 43.0 km/h moves east for 24.0 min, then in a direction 48.0° east of due north for 26.0 min, and t... 查看全部
4:311 DETAILS MY NOTES This question has several parts that must be completed sequentially. If you skip a part of the qu... 查看全部
Four identical charges q are placed in the corners of a square as shown in the figure. If another charge Q is placed in ... 查看全部
A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and 0.100 kg of copper at 100°C is mixed i... 查看全部
What is the direction of the magnetic force on the negative charge in the figure? V O a to the left o b. up c. down O d.... 查看全部
An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibri... 查看全部