![](https://lstatic.shangxueba.com/jiandati/h5/images/m_q_title.png)
A constant net torque is exerted on an object. Which of the following quantities for the o
A、(a)
B、(a)(b)
C、(a)(b)(c)
D、(a)(b)(c)(d)
A、(a)
B、(a)(b)
C、(a)(b)(c)
D、(a)(b)(c)(d)
A、
B、
C、
D、
A、They are not real forces.
B、In reference frame of a space station, the spaceman cannot feel gravity because it is balanced by inertial force.
C、In a rotational noninertial frame, there is only one inertial force acting on moving objects: Coriolis force.
D、Because of the inertial force, gravity of objects is slightly different from the gravitational force acted by the Earth.
A、48J
B、24J
C、12J
D、6J
A、80m/s
B、6m/s
C、480m/s
D、13.3m/s
A、30dB
B、50dB
C、54dB
D、57dB
A、When the distance d increases, the interference fringes on screen are getting far away from each other.
B、When the distance L increases, the interference fringes on screen are getting far away from each other.
C、Remaining other conditions, do the experiment under water; the interference fringes on screen will be closer to each other.
D、Colorful fringes can be seen if sunlight is used as the incident light.
A、The first bright fringe.
B、The second bright fringe.
C、The first dark fringe.
D、The second dark fringe.
A、0
B、1/2
C、1/4
D、1/8
A、0.80c
B、0.976c
C、0.994c
D、1.60c
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!