A uniform horizontal beam 6m long has a mass of 0.5t and support at each end. the following mass are placed on the beam 2t at 1m from the left hand support and 4t and 2m from the right hand support sketch the arrangements and calculate the reaction at the support. take g as 9.81m/s. ​

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

It can take some of those large , industrial vehicles up to feet to stop when traveling only 60 mph, and therefore , you shoukd be mindful to not be jn the traffic right in front of them a. 100 feet b. 200 feet c. 335 feet d. 425 feet

What object a collides with object b and bounces back its final momentum is?