hope
this will help you
Question 5 The rate of increase of the number of a virus in a carrier-body is...
Suppose a student carrying a flu virus returns to an isolated
college campus of 600 students. If it is assumed that the rate at
which the virus spreads is jointly proportional to number of
students infected and number of students not infected, set up the
differential equation (don't solve) to determine the number of
students after t days if it is further observed after 1 days, 10
students are infected.
Suppase a situdeat carrying a fla virus returnis to an...
6. A single sick student returns to a campus of 2500 students (day 0). The rate at which the virus spreads is proportional to the number of infected students squared. If we know that there are 25 infected students after four days, how many will be infected after 10 days?
6. A single sick student returns to a campus of 2500 students (day 0). The rate at which the virus spreads is proportional to the number of infected students squared....
The spread of CORONA virus is given by the equation,?=?.ertIf there were initially 500 people infected by the virus by March 2020 and t is given in weeks, and r is the growth rate of the virus.I. How many people are infected after 84 days when the growth rate is 0.195? [4 Marks]II. At what rate will cause the infected number of people to rise to 1500 in 21 days? [5 Marks]III. How long will it take for the initial...
The spread of CORONA virus is given by the equation,Q=Q.ertIf there were initially 500 people infected by the virus by March 2020 and t is given in weeks, and r is the growth rate of the virus.I. How many people are infected after 84 days when the growth rate is 0.195? [4 Marks]II. At what rate will cause the infected number of people to rise to 1500 in 21 days? [5 Marks]III. How long will it take for the initial...
The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial population P. has doubled in 5 years. Suppose it is known that the population is 11,000 after 3 years. What was the initial population Po? (Round your answer to one decimal place.) Po= What will be the population in 10 years? (Round your answer to the nearest person.) persons How fast is the population growing at...
QUESTION TWO (9 marks total) (a) An n-type semiconductor has a uniform excess minority carrier concentration of 5 x 1015 cm3 and minority carrier lifetime T 1.5 us in the bulk, and minority carrier lifetime Ts 0.2 us at the surface. D 10 cm2/s. Assuming zero applied electric field and low-level injection: Determine the steady-state excess carrier concentration at the surface What is the generation rate? Enter calculated values in the boxes below (5 marks) (Hint: steady-state means time-invariant; that...
Application (12 marks) 7. An influenza virus is spreading through a school according to the function N(t) = 3(2), where N is the number of people infected and t is the time, in days. a) How many people have the virus initially, when t = 0? НА 12A b) Determine the average rate of change between i) day 1 and day 2 ii) day 2 and day 3 Compare the rates with respect to the given situation. 11A C) Estimate...
Question 1. First, we study a model for a disease which spreads quickly through a population. The rate of new infections at time t is proportional to the number of people who are currently infected at time t, and the number of people who are susceptible at time t. (a) Explain why I(t) satisfies the first-order ODE dI BI(N − 1) dt where ß > 0 is a constant. (b) Find the equilibrium solution(s) of the ODE (in terms of...
5. If n is the number of periods per year, r is the annual percentage rate (APR), t is the number of years, and i is the interest rate per period (i = r/n), the periodic payment R that will pay off a loan of P dollars is given by i R-P Homeowners are often interested in how the time will change if they increase the monthly payment. Suppose a couple still owes $90,000 on a house that is financed...
10 pl One metric to show how contagious a virus is is the Basic Reproduction Rate (Ro). Let Ni denote the expected number of infected cases on day i (i>0), we have the following formula to calculate Ni. Ni = N1*(1+Ro)-1 Write a recursive method "public int dailyCases(int num1, float Ro, inti)" to compute N; for a given first day infected cases N1, a Ro and the i-th day.