Suppose you are randomly guessing in a ten multiple choice questions. Find the probability that you will get exactly five correct answers. Each question has four possible choices.
n = 10 (total) x = 5 correct answers (successes) p = 1/4 since there is one correct choice in the possible 4
Escape velocity is the minimum velocity needed for an object to overcome the gravitational force exerted by the planet. It is given by the following relation :
V = √(2GM/r)
where,
V - escape velocity
G - gravitational constant
M - mass of planet
r - radius of planet
We can take the ratio of escape velocities as follow :
V1/V2 = √(M1/M2) * √(r2/r1)
where, 1 is for Earth and 2 is for X-39
given that,
V1 = V
M2 = (1/3)*M1 => M1/M2 = 3
r2 = (1/3)*r1 => r2/r1 = 1/3
therefore,
V/V2 = √3 * √(1/3) = 1
ie. V2 = V
ie. Escape velocity of X-39 is same as that of Earth.
3. Planet X-39 has a mass equal to 1/3 that of Earth and a radius equal to 1/3 that of Earth. If v is the escape speed for Earth, what is the escape speed for X-39?
Megan has asked Danny to come to her office to discuss the many comments she has been hearing about his inability to have a good relationship with his employees. What advice can Megan offer to Danny in terms of enhancing and refining his managerial skills in this area?
There is some evidence to suggest that changes in barometric pressure can affect blood pressure, but the exact relationship is not well understood. Blood pressure is the force of blood against the walls of the arteries, and it is influenced by a number of factors, including the volume of blood in the circulatory system, the resistance of the blood vessels, and the strength of the heartbeat.
Barometric pressure can affect blood pressure by changing the volume of blood in the circulatory system. When barometric pressure changes, it can cause a shift in the volume of fluids in the body, leading to changes in blood pressure. For example, a rapid drop in barometric pressure, such as during a weather front, can cause an increase in blood volume and a corresponding increase in blood pressure.
Again, as we've discussed in past threads, the relationship between barometric pressure and blood pressure is complex and not fully understood. Other factors, such as stress, age, and the presence of underlying medical conditions, can also play a role in blood pressure regulation. Additionally, the effects of barometric pressure changes on blood pressure can vary between individuals and are not always predictable.