题目内容 (请给出正确答案)
[主观题]

Two particles of different mass start from rest. The same net force acts on both of them as they move over equal distances. How do their final kinetic energies compare?

A、The particle of larger mass has more kinetic energy.

B、The particle of smaller mass has more kinetic energy.

C、The particles have equal kinetic energies.

D、Either particle might have more kinetic energy.

提问人:网友liyuejin168 发布时间:2022-01-06
参考答案
  抱歉!暂无答案,正在努力更新中……
如搜索结果不匹配,请 联系老师 获取答案
更多“Two particles of different mas…”相关的问题
第1题
How is the Russian population spread?

A、1/4 of its population live in cities.

B、1/2 of its population live in cities.

C、3/4 of its population live in cities.

D、All of its population live in cities.

点击查看答案
第2题
pinch anyway crawl adjust chilly scrape regularly grip frequently spit Their relationship was decidedly __________ after the argument.
点击查看答案
第3题
A turntable rotates with a constant 2.25 rad/s^2 angular acceleration. After 4.00 s it has rotated through an angle of 60.0 rad. The angular velocity of the wheel at the beginning of the 4.00s interval was

A、10.5 rad/s

B、19.5 rad/s

C、14.5 rad/s

D、17.5 rad/s

点击查看答案
第4题
A bucket of water with total mass 23 kg is attached to a rope, which in turn, is wound around a 0.050-m radius cylinder at the top of a well. A crank with a turning radius of 0.25 m is attached to the end of the cylinder. What minimum force directed perpendicular to the crank handle is required to just raise the bucket? (Assume the rope's mass is negligible, that cylinder turns on frictionless bearings, and that g = 9.8 m/s^2.)

A、45 N

B、68 N

C、90 N

D、135 N

E、35 N

F、15 N

点击查看答案
第5题
A rod of length L is pivoted about its left end and has a force F applied perpendicular to the other end. The force F is now removed and another force F' is applied at the midpoint of the rod. If F' is at an angle of 30° with respect to the rod, what is its magnitude if the resulting torque is the same as when F was applied?

A、F

B、2F

C、3F

D、4F

E、5F

F、6F

G、7F

点击查看答案
第6题
A baseball pitcher loosens up his pitching arm. He tosses a 0.15-kg ball using only the rotation of his forearm, 0.32 m in length, to accelerate the ball. If the ball starts at rest and is released with a speed of 12 m/s in a time of 0.40 s, what torque is applied to the ball while being held by the pitcher's hand to produce the angular acceleration?

A、1.1 N∙m

B、11 N∙m

C、7.2 N∙m

D、1.4 N∙m

E、14 N∙m

F、3.4 N∙m

点击查看答案
第7题
A ventilation fan with a moment of inertia of 0.034 kg∙m^2 has a net torque of 0.11 N∙m applied to it. If it starts from rest, what kinetic energy will it have 8.0 s later?

A、31 J

B、17 J

C、11 J

D、6.6 J

E、8.6 J

F、3.6 J

点击查看答案
账号:
你好,尊敬的用户
复制账号
发送账号至手机
密码将被重置
获取验证码
发送
温馨提示
该问题答案仅针对搜题卡用户开放,请点击购买搜题卡。
马上购买搜题卡
我已购买搜题卡, 登录账号 继续查看答案
重置密码
确认修改
欢迎分享答案

为鼓励登录用户提交答案,简答题每个月将会抽取一批参与作答的用户给予奖励,具体奖励活动请关注官方微信公众号:简答题

简答题官方微信公众号

警告:系统检测到您的账号存在安全风险

为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!

微信搜一搜
简答题
点击打开微信
警告:系统检测到您的账号存在安全风险
抱歉,您的账号因涉嫌违反简答题购买须知被冻结。您可在“简答题”微信公众号中的“官网服务”-“账号解封申请”申请解封,或联系客服
微信搜一搜
简答题
点击打开微信